Ralph A. Bergh
28Patents
16h-index
16Co-inventors
78Inventor score
Filing activity: Apr 11, 1980 → Jul 25, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5153676A | Apparatus and method for reducing phase errors in an interferometer | Physics | 240 | Expired |
| US4493528A | Fiber optic directional coupler | Emerging Cross-Sectional Technologies | 93 | Expired |
| US4536058A | Method of manufacturing a fiber optic directional coupler | Emerging Cross-Sectional Technologies | 72 | Expired |
| US4386822A | Polarizer and method | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4410275A | Fiber optic rotation sensor | Physics | 52 | Expired |
| US4615582A | Magneto-optic rotator for providing additive Faraday rotations in a loop of optical fiber | Physics | 44 | Expired |
| US4601541A | Fiber optic directional coupler | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4560234A | Fiber optic switchable coupler | Physics | 30 | Expired |
| US4733938A | Magneto-optic rotator | Physics | 29 | Expired |
| US4773759A | Interferometer with Kerr effect compensation | Physics | 28 | Expired |
| US4671658A | Fiber optic rotation sensor utilizing a magnetic shield and an optical isolator | Physics | 26 | Expired |
| US4603940A | Fiber optic dye amplifier | Electricity | 23 | Expired |
| US5946097A | Vibration rectification error reducer for fiber optic gyroscope | Physics | 22 | Expired |
| US5999304A | Fiber optic gyroscope with deadband error reduction | Physics | 20 | Expired |
| US5781300A | Backscatter error reducer for interferometric fiber optic gyroscope | Physics | 20 | Expired |
| US6046810A | Kerr effect compensator for a fiber optic gyroscope | Physics | 18 | Expired |
| US5602642A | Magnetically insensitive fiber optic rotation sensor | Physics | 14 | Expired |
| US5854678A | Three-axis fiber optic gyroscope having a single source and multi-coupler configuration | Physics | 13 | Expired |
| US4869592A | Method and apparatus for obtaining a digital measure of absolute rotation | Physics | 11 | Expired |
| US5120130A | Apparatus and method for reducing phase errors in an interferometer | Physics | 6 | Expired |
| US5528715A | Trimming of fiber optic winding and method of achieving same | Physics | 5 | Expired |
| US5506923A | Apparatus and method for trimming of fiber optic winding | Physics | 5 | Expired |
| US5475774A | Optical fiber sensor coil using reverse quadrupoles and method of winding same | Physics | 5 | Expired |
| US8497994B2 | Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same | Physics | 4 | Active |
| US7505139B2 | Signal processing for a Sagnac interferometer | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.