Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5182953 | Method and apparatus for shaft torque measurement with temperature compensation | Sylvester M. Ellinger, Douglas R. Patriquin | 1993-02-02 |
| 5012090 | Optical grating sensor and method of monitoring having a multi-period grating | — | 1991-04-30 |
| 4985624 | Optical grating sensor and method of monitoring with a multi-period grating | — | 1991-01-15 |
| 4983034 | Composite integrity monitoring | — | 1991-01-08 |
| 4963729 | Optically powered sensor system with improved signal conditioning | Richard P. Andresen | 1990-10-16 |
| 4952797 | System and method for optically controlled acoustic transmission and reception | — | 1990-08-28 |
| 4900921 | System and method for opto-acoustic liquid quantity measurement and transducer therefor | — | 1990-02-13 |
| 4874245 | Optical shaft angular and torsional displacement and speed sensing system | Robert Rudd, Sylvester M. Ellinger, Douglas R. Patriquin, Bruce R. Kline | 1989-10-17 |
| 4863270 | Multi-mode optical fiber sensor and method | — | 1989-09-05 |
| 4863274 | Optical shaft torsional displacement and speed sensing system | Robert Rudd, Michael Ellinger, Douglas R. Patriquin, Bruce R. Kline | 1989-09-05 |
| 4840481 | Polarimetric optical frequency domain distributed strain sensor and method | — | 1989-06-20 |
| 4830449 | Polarimetric fiber optic speed sensor | — | 1989-05-16 |
| 4777661 | Apparatus and method for self-referencing and multiplexing intensity modulating fiber optic sensors | — | 1988-10-11 |
| 4712004 | Method and apparatus for compensating fiber optic lead and connector losses in a fiber optic sensor by using a broadband optical source and multiple wave retardation | — | 1987-12-08 |
| 4709145 | Method and apparatus for compensating fiber optic lead and connector losses in a fiber optic sensor by using a dual wavelength optical source and matched polarizer | — | 1987-11-24 |
| 4564289 | Single mode optical fiber polarimetric stress sensor having optical common mode rejection | — | 1986-01-14 |
| 4556791 | Photoelastic sensor using a variable intensity light source as a feedback means | — | 1985-12-03 |
| 4547262 | Method for forming thin film passive light waveguide circuit | Richard A. Soref, Norman A. Sanford | 1985-10-15 |
| 4518857 | Temperature and pressure compensated elasto-optic sensor | Donald H. McMahon | 1985-05-21 |