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Below is a list of issued US Patents owned by or licensed to CiDRA. Many other patents are pending. CiDRA products and/or services may be covered by one or more of the below-listed US patents or foreign counterparts thereto. Please return to this site often to obtain the latest list of issued CiDRA US patents. You may obtain a copy of these patents from www.USPTO.gov.
| US Patent |
|
Issue Date |
|
Title |
|
| 6,118,914 |
|
09/12/00 |
|
Method and Device for Providing Stable and Precise Optical Reference Signals |
|
| 6,249,624 |
|
06/19/01 |
|
Method and Apparatus for Forming a Bragg Grating with High Intensity Light |
|
| 6,298,184 |
|
10/02/01 |
|
Method and Apparatus for Forming a Tube-Encased Bragg Grating |
|
| 6,310,990 |
|
10/30/01 |
|
Tunable Optical Structure Featuring Feedback Control |
|
| 6,317,555 |
|
11/13/01 |
|
Creep-Resistant Optical Fiber Attachment |
|
| 6,321,007 |
|
11/20/01 |
|
Optical Fiber Having a Bragg Grating Formed in Its Cladding |
|
| 6,346,702 |
|
02/12/02 |
|
Fiber Bragg Grating Peak Detection System and Method for Doing the Same. |
|
| 6,403,949 |
|
06/11/02 |
|
Method and Apparatus for Correcting Systematic Error in a Wavelength Measuring Device. |
|
| 6,450,037 |
|
09/17/02 |
|
Non-Instrusive Fiber Optic Pressure Sensor for Measuring Unsteady Pressures within a Pipe. |
|
| 6,453,108 |
|
09/17/02 |
|
Athermal Bragg Grating Package with Coarse and Fine Mechanical Tuning. |
|
| 6,456,771 |
|
09/24/02 |
|
Optical Fiber with a Pure Silica Core Having a Bragg Grating Formed in its Core and a Process for Providing Same. |
|
| 6,462,329 |
|
10/08/02 |
|
Fiber Bragg Grating Reference Sensor for Precise Reference Temperature Measurement. |
|
| 6,466,716 |
|
10/15/02 |
|
Optical Fiber Having a Bragg Grating in a Wrap that Resists Temperature induced changes in Length. |
|
| 6,470,036 |
|
10/22/02 |
|
Tunable External Cavity Semiconductor Laser Incorporating Tunable Bragg Grating. |
|
| 6,507,693 |
|
01/14/03 |
|
Creep-Resistant Optical Fiber Attachment. |
|
| 6,529,923 |
|
03/04/03 |
|
Method for Improving the Accuracy in the Determination of a Waveform Center |
|
| 6,563,968 |
|
05/13/03 |
|
Tunable Optical Structure Featuring Feedback Control |
|
| 6,594,081 |
|
07/15/03 |
|
Actuator Mechanism for Tuning an Optice Device |
|
| 6,594,288 |
|
07/15/03 |
|
Tunable Raman Laser and Amplifier |
|
| 6,594,410 |
|
07/15/03 |
|
Wide Range Tunable Optical Filter |
|
| 6,597,711 |
|
07/22/03 |
|
Bragg Grating based laser |
|
| 6,601,411 |
|
08/05/03 |
|
Method for Annealing an Optical Waveguide Having a Bragg Grating |
|
| 6,621,957 |
|
09/16/03 |
|
Temperature Compensated Optical Device |
|
| 6,633,695 |
|
10/14/03 |
|
Compression-Tuned Grating Based Optical Add/Drop Multiplexer |
|
| 6,732,575 |
|
05/11/04 |
|
Fluid Parameter Measurement in Pipes Using Acoustic Pressures |
|
| 6,753,034 |
|
06/22/04 |
|
Method of Metallization of an Optical Waveguide |
|
| 6,763,043 |
|
07/13/04 |
|
Tunable Grating Based Dispersion Compensator |
|
| 6,776,045 |
|
08/17/04 |
|
Bragg Grating Pressure Sensor for Industrial Sensing Applications. |
|
| 6,792,009 |
|
09/14/04 |
|
Tunable Grating-Based Channel Filter Parking Device. |
|
| 6,804,693 |
|
10/12/04 |
|
Method for Reducing Skew in a Real-time Centroid Calculation. |
|
| 6,810,178 |
|
10/26/04 |
|
Large diameter optical waveguide having blazed grating therin |
|
| 6,826,343 |
|
11/30/04 |
|
Large diameter multi core waveguide |
|
| 6,834,142 |
|
12/21/04 |
|
Optical grating based filter |
|
| 6,856,729 |
|
02/15/05 |
|
Wavelength monitor utilizing a tunable bragg grating and blazed grating |
|
| 6,865,194 |
|
03/08/05 |
|
Strain Isolated Bragg Grating Temperature Sensor |
|
| 6,889,562 |
|
05/10/05 |
|
Flow Rate Measurement for industrial sensing applications using unsteady pressures |
|
| 6,915,048 |
|
07/05/05 |
|
Fabry-perot filter/resonator |
|
| 6,922,277 |
|
07/26/05 |
|
Optical interleaver/deinterleaver device having an array of mirco-mirrors |
|
| 6,934,069 |
|
08/23/05 |
|
Chromatic dispersion compensation device having an array of micromirrors |
|
| 6,947,640 |
|
09/20/05 |
|
Alignment and imaging system for writing bragg gratings |
|
| 6,956,687 |
|
10/18/05 |
|
Optical blocking filter having an array of micromirrors |
|
| 6,959,604 |
|
11/01/05 |
|
Non-Intrusive fiber optic pressure sensor for measuring unsteady pressures in a pipe |
|
| 6,988,411 |
|
01/24/06 |
|
Fluid parameter measurement in pipes using acoustic pressures |
|
| 6,996,316 |
|
02/07/06 |
|
Large diameter D-shaped waveguide and optical coupler |
|
| 7,006,206 |
|
02/28/06 |
|
Method and apparatus for detecting peaks in an optical signal using a cross-correlation filter |
|
| 7,019,883 |
|
03/28/06 |
|
Dynamic optical filter having a spatial light modulator |
|
| 7,032,432 |
|
04/25/06 |
|
Apparatus and method for measuring parameters of a mixture having liquid droplets suspended in a vapor flowing in a pipe |
|
| 7,058,549 |
|
06/06/06 |
|
Apparatus and method for measuring unsteady pressures within a large diameter pipe |
|
| 7,062,126 |
|
06/13/06 |
|
Large diameter optical waveguide having bragg grating and being configured for reducing the bulk modulus of compressibility |
|
| 7,062,976 |
|
06/20/06 |
|
An apparatus and method for measuring gas volume fraction of a fluid flowing within a pipe |
|
| 7,068,897 |
|
06/27/06 |
|
Method for restoring or increasing photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide |
|
| 7,086,278 |
|
08/08/06 |
|
Measurement of entrained and dissolved gasesin process flow lines |
|
| 7,096,719 |
|
08/29/06 |
|
Apparatus for measuring parameters of a flowing multiphase mixture |
|
| 7,110,893 |
|
09/19/06 |
|
Method and apparatus for measuring a parameter of a fluid flowing within a pipe using an array of sensors |
|
| 7,121,152 |
|
10/17/06 |
|
A portable flow measurement apparatus having an array of sensors |
|
| 7,123,833 |
|
10/17/06 |
|
Dynamically reconfigurable optical smart node |
|
| 7,126,740 |
|
10/24/06 |
|
Multifunctional optical device having a spatial light modulator with an array of micromirrors. |
|
| 7,127,360 |
|
10/24/06 |
|
Dual function flow measurement apparatus having an array of sensors |
|
| 7,134,320 |
|
11/14/06 |
|
Apparatus and method for providnig a density measurement augmented for entrained gas |
|
| 7,139,667 |
|
11/21/06 |
|
Method for calibrating a volumetric flow meter having an array of sensors |
|
| 7,146,864 |
|
12/12/06 |
|
An apparatus having a multiband sensor assembly for measuring a paramenter of a fluid flow flowing within a pipe |
|
| 7,150,202 |
|
12/19/06 |
|
Method and apparatus for measuring characteristics of core-annular flow |
|
| 7,152,003 |
|
12/19/06 |
|
Method and apparatus for determining a quality metric of a measurement of a fluid parameter |
|
| 7,152,460 |
|
12/26/06 |
|
An apparatus and method for compensating a coriolis meter |
|
| 7,165,464 |
|
01/23/07 |
|
An apparatus and method for providing a flow measurement compensated for entrained gas |
|
| 7,171,315 |
|
01/30/07 |
|
Method and apparatus for measuring a parameter of a fluid flowing within a using sub-array processing |
|
| 7,197,938 |
|
04/03/07 |
|
Contact-based transducers for charactarizing unsteady pressures in pipes |
|
| 7,197,942 |
|
04/03/07 |
|
Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors |
|
| 7,237,440 |
|
07/03/07 |
|
A flow measurement apparatus having strain-based sensors and ultrasonic sensors |
|
| 7,245,385 |
|
07/17/07 |
|
Characterizing unsteady pressures in pipes using optical measurement devices |
|
| 7,253,742 |
|
08/07/07 |
|
Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors |
|
| 7,253,897 |
|
08/07/07 |
|
Optical spectrum analyzer |
|
| 7,261,002 |
|
08/28/07 |
|
Flow rate measurement using unsteady pressures |
|
| 7,302,861 |
|
12/04/07 |
|
A portable flow measurement apparatus having an array of sensors |
|
| 7,308,820 |
|
12/18/07 |
|
Piezocable based sensor for measuring unsteady pressures inside a pipe |
|
| 7,322,245 |
|
01/29/08 |
|
Apparatus and method for measuring a fluid flowing in a pipe using acoustic pressures |
|
| 7,322,251 |
|
01/29/08 |
|
Method and apparatus for measuring a parameter of a high temperature fluid within a pipe using an array of piezoelectric based flow sensors |
|
| 7,328,624 |
|
02/12/08 |
|
Probe for Measuring Parameters of a Flowing Fluid and/or Multiphase Mixture |
|
| 7,330,797 |
|
02/12/08 |
|
An Apparatus and Method for Measuring Settlement of Solids in a Multiphase Flow |
|
| 7,337,075 |
|
02/26/08 |
|
Apparatus and Method for Measuring Parameters Of A Mixture Having Liquid Droplets Suspended in A Vapor Flowing In A Pipe |
|
| US Patent |
|
Issue Date |
|
Title |
|
| 5,767,411 |
|
6/16/98 |
|
Apparatus for Enhancing Strain in Intrinsic Fiber Optic Sensors and Packaging Same for Harsh Environments |
|
| 5,844,667 |
|
12/1/98 |
|
Fiber Optic Pressure Sensor with Passive Temperature Compensation |
|
| 5,877,426 |
|
3/2/99 |
|
Bourdon Tube Pressure Gauge with Integral Optical Strain Sensors for Measuring Tension or Compressive Strain |
|
| 5,892,860 |
|
4/6/99 |
|
Multi-Parameter Fiber Optic Sensor for use in Harsh Environments |
|
| 5,925,879 |
|
7/20/99 |
|
Oil and Gas Well Packer having Fiber Optic Bragg Grating Sensors for Downhole Insitu Inflation Monitoring |
|
| 5,945,665 |
|
8/31/99 |
|
Bolt, Stud or Fastener having an embedded Fiber Optic Bragg Grating Sensor for Sensing Tensioning Strain |
|
| 5,973,317 |
|
10/26/99 |
|
Washer having Fiber Optic Bragg Grating Sensors for Sensing a Shoulder Load between Components in a Drill String |
|
| 5,986,749 |
|
11/16/99 |
|
Fiber Optic Sensing System |
|
| 5,987,197 |
|
11/16/99 |
|
Array Topologies for Implementing Serial Fiber Bragg Grating Interferometer Arrays |
|
| 6,009,216 |
|
12/28/99 |
|
Coiled Tubing Sensor System for Delivery of Distributed Mulitplexed Sensors |
|
| 6,016,702 |
|
1/25/00 |
|
High Sensitivity Fiber Optic Pressure Sensor for use in Harsh Environments |
|
| 6,072,567 |
|
6/6/00 |
|
Vertical Seismic Profiling System having Vertical Seismic Profiling Optical Signal Processing Equipment and Fiber Bragg Grafting Optical Sensors |
|
| 6,137,621 |
|
10/24/00 |
|
Acoustic Logging System using Fiber Optics |
|
| 6,175,108 |
|
1/16/01 |
|
Accelerometer Featuring Fiber Optic Bragg Grating Sensor for Providing Multiplexed Mulit-Axis Acceleration Sensing |
|
| 6,191,414 |
|
02/20/01 |
|
Composite form as a component for a Pressure Transducer |
|
| 6,227,114 |
|
5/8/01 |
|
Select Trigger and Detonation System using an Optical Fiber |
|
| 6,229,827 |
|
05/8/01 |
|
Compression-Tuned Bragg Grating and Laser |
|
| 6,233,374 |
|
5/15/01 |
|
Mandrel-Wound Fiber Optic Pressure Sensor |
|
| 6,252,656 |
|
6/26/01 |
|
Apparatus and Method of Siesmic Sensing Systems using Fiber Optics |
|
| 6,271,766 |
|
8/7/01 |
|
Distributed Selectable Latent Fiber Optic Sensors |
|
| 6,274,863 |
|
8/14/01 |
|
Selective Aperture Arrays for Seismic Monitoring |
|
| 6,278,811 |
|
8/21/01 |
|
Fiber Optic Bragg Grating Pressure Sensor |
|
| 6,279,660 |
|
8/28/01 |
|
Apparatus for Optimizing Production of Mulit-Phase Fluid |
|
| 6,305,227 |
|
10/23/01 |
|
Sensing Systems Using Quartz Sensors and Fiber Optics |
|
| 6,338,579 |
|
1/15/02 |
|
Fiber Optic Sleeve Assembly for use at a Splice Junction of a Fiber Optic Cable |
|
| 6,351,987 |
|
3/5/02 |
|
Fiber Optic Pressure Sensor for DC Pressure and Temperature |
|
| 6,354,147 |
|
3/12/02 |
|
Fluid Parameter Measurement in Pipes using Acoustic Pressures |
|
| 6,363,089 |
|
03/26/02 |
|
Compression-Tuned Bragg Grating and Laser. |
|
| 6,404,961 |
|
6/11/02 |
|
Optical Fiber Cable having Fiber in Metal Tube Core with Outer Protective Layer |
|
| 6,414,303 |
|
7/2/02 |
|
High Accuracy Bragg Grating Based Pressure Sensor with Dual Resolution Mode |
|
| 6,422,084 |
|
7/23/02 |
|
Bragg Grating Pressure Sensor |
|
| 6,435,030 |
|
8/20/02 |
|
Measurement of Propagating Acoustic Waves in Compliant Pipes |
|
| 6,439,055 |
|
8/27/02 |
|
Pressure Sensor Assembly Structure to Insulate a Pressure Sensing Device from Harsh Environments |
|
| 6,443,226 |
|
9/3/02 |
|
Apparatus for Protecting Sensors within a Well Environment. |
|
| 6,445,868 |
|
9/3/02 |
|
Optical Fiber Feedthrough Assembly and Method of Making Same |
|
| 6,448,551 |
|
9/10/02 |
|
Fiber Bragg Grating Sensor System having Enhanced Strain-to-Wavelength Responsivity by using a Spectral Beating Based Vernier Effect |
|
| 6,452,667 |
|
9/17/02 |
|
Pressure-Isolated Bragg Grating Temperature Sensor |
|
| 6,463,813 |
|
10/15/02 |
|
Displacement Based Pressure Sensor Measuring Unsteady Pressure in a Pipe |
|
| 6,490,931 |
|
12/10/02 |
|
Fused Tension-Based Fiber Grating Pressure Sensor |
|
| 6,496,625 |
|
12/17/02 |
|
Transmission Cable Optical Fiber Protector and Method |
|
| 6,501,067 |
|
12/31/02 |
|
Apparatus for Protecting Sensing Devices |
|
| 6,519,388 |
|
02/11/03 |
|
Tube-Encased Fiber Grating |
|
| 6,526,212 |
|
02/25/03 |
|
Optical Fiber Bulkhead Feedthrough Assembly and Method of Making Same. |
|
| 6,536,291 |
|
03/25/03 |
|
Optical Flow Rate Measurement Using Unsteady Pressures |
|
| 6,550,342 |
|
04/22/03 |
|
Circumferential Strain Attenuator |
|
| 6,558,036 |
|
5/6/03 |
|
Non-Intrusive Temperature Sensor For Measuring Internal Temperature of Fluids Within Pipes |
|
| 6,575,033 |
|
6/10/03 |
|
Highly Sensitive Accelerometer |
|
| 6,587,798 |
|
7/1/03 |
|
Method and System for Determining the Speed of Sound in a Fluid within a Conduit |
|
| 6,601,458 |
|
8/5/03 |
|
Distributed Sound Speed Measurements for Multiphase Flow Measurement |
|
| 6,601,671 |
|
8/5/03 |
|
Method and Apparatus for Seismically Surveying an Earth Formation in Relation to a Borehold |
|
| 6,609,069 |
|
08/19/03 |
|
Method and Apparatus for Determining the Flow Velocity of a Fluid within a Pipe |
|
| 6,626,043 |
|
09/30/03 |
|
Fluid Diffusion Resistent Glass-Encased Fiber Optic Sensor |
|
| 6,668,656 |
|
12/30/03 |
|
Optical Sensor having Differing Diameters |
|
| 6,685,361 |
|
02/03/04 |
|
Fiber Optic Cable Connections for Downhole Applications |
|
| 6,690,866 |
|
02/10/04 |
|
Optical Fiber Cable for use in Harsh Environments |
|
| 6,691,584 |
|
02/17/04 |
|
Flow Rate Measurement Using Unsteady Pressures |
|
| 6,698,297 |
|
03/02/04 |
|
Venturi Augmented Flow Meter |
|
| 6,768,825 |
|
07/27/04 |
|
Optical Sensor Device Having Creep-Resistant Optical Fiber Attachments. |
|
| 6,782,150 |
|
08/24/04 |
|
Apparatus for Sensing Fluid In a Pipe |
|
| 6,785,004 |
|
08/31/04 |
|
Method and apparatus for interrograting fiber optic sensors |
|
| 6,789,424 |
|
09/14/04 |
|
Highly sensitive accelerometer |
|
| 6,813,013 |
|
11/02/04 |
|
Pressure isolated bragg grating temperature sensor |
|
| 6,813,962 |
|
11/09/04 |
|
Distributed sound speed measurements for multiphase flow measurement |
|
| 6,820,489 |
|
11/23/04 |
|
Optical differential pressure sensor |
|
| 6,837,098 |
|
01/04/05 |
|
Sand monitoring within wells using acoustic arrays |
|
| 6,840,114 |
|
01/11/05 |
|
Housing on the exterior of a well casing for fiber sensors |
|
| 6,862,920 |
|
03/08/05 |
|
Fluid Parameter Measurement in Pipes using acoustic pressures |
|
| 6,868,737 |
|
03/22/05 |
|
Circumferential strain attenuator |
|
| 6,877,378 |
|
04/12/05 |
|
Fluid Diffusion resistant glass-encased fiber optic sensor |
|
| 6,888,972 |
|
05/03/05 |
|
Multiple component sensor mechanism |
|
| 6,891,621 |
|
05/10/05 |
|
Highly sensitive cross axis accelerometer |
|
| 6,898,338 |
|
05/24/05 |
|
A Fabry-Perot element based on a large-diameter optical waveguide |
|
| 6,898,541 |
|
05/24/05 |
|
Method and apparatus for determining component flow rates for a multi-phase flow |
|
| 6,955,085 |
|
10/18/05 |
|
Optical Accelerometer or displacement device using a flexure system |
|
| 6,957,574 |
|
10/25/05 |
|
Well integrity monitoring system |
|
| 6,971,259 |
|
12/06/05 |
|
Fluid density measurement in pipes using acoustic pressures |
|
| 6,982,996 |
|
01/03/06 |
|
Large diameter optical wave guide, grate and laser |
|
| 6,986,276 |
|
01/17/06 |
|
Deployable mandrel for downhole measurements |
|
| 6,995,085 |
|
02/07/06 |
|
Fiber Optic Based Method and System for Determining and Controlling Position of a Sliding Sleeve Valve |
|
| 6,995,352 |
|
02/07/06 |
|
Fiber optic based method and system for determining and controlling position of a sliding sleeve valve |
|
| 7,013,729 |
|
03/21/06 |
|
Highly sensitive accelerometer |
|
| 7,028,538 |
|
04/18/06 |
|
Sand monitoring within wells using acoustic arrays |
|
| 7,028,543 |
|
04/18/06 |
|
System and method for monitoring performance of downhole equipment using fiber optic based sensors |
|
| 7,052,185 |
|
05/30/06 |
|
Fiber optic cable connectors for downhole applications |
|
| 7,059,171 |
|
06/19/06 |
|
Fluid density measurement in pipes using accoustic pressures |
|
| 7,059,172 |
|
06/13/06 |
|
Fluid density measurement in pipes using accoustic pressures |
|
| 7,080,529 |
|
07/25/06 |
|
A method for making large diameter optical waveguide having bragg grating and being configured for reducing the bulk modulus of compressibility |
|
| 7,124,818 |
|
10/24/06 |
|
Multiple Component Sensor Mechanism |
|
| 7,209,606 |
|
04/24/07 |
|
A Fabry-Perot Element Based on a Large-Diameter Optical Waveguide |
|
If you have any questions regarding CiDRA's patents please contact CiDRA at the below address.
CiDRA
50 Barnes Park North
Wallingford, CT 06492
Attn: Patents
Phone: 203.265.0035
Fax: 203.294.4211
E-mail: patents@cidra.com
This page was last updated: 2/26/08
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