Stephen O'Brien
31Patents
12h-index
62Co-inventors
84Inventor score
Filing activity: Jun 26, 1991 → Aug 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5926493A | Optical semiconductor device with diffraction grating structure | Electricity | 248 | Expired |
| US5255332A | NxN Optical crossbar switch matrix | Physics | 128 | Expired |
| US5231642A | Semiconductor ring and folded cavity lasers | Electricity | 103 | Expired |
| US6396864B1 | Thermally conductive coatings for light emitting devices | Electricity | 93 | Expired |
| US6601031B1 | Speech recognition front end controller to voice mail systems | Electricity | 64 | Expired |
| US5155760A | Voice messaging system with voice activated prompt interrupt | Electricity | 57 | Expired |
| US5793521A | Differentially patterned pumped optical semiconductor gain media | Electricity | 52 | Expired |
| US5479489A | Voice telephone dialing architecture | Electricity | 50 | Expired |
| US5349602A | Broad-area MOPA device with leaky waveguide beam expander | Electricity | 41 | Expired |
| US6525872B1 | Fiber grating-stabilized, semiconductor pump source | Electricity | 40 | Expired |
| US6349156B1 | Semiconductor etalon device, optical control system and method | Physics | 27 | Expired |
| US6246480A | Stepped etalon | Physics | 25 | Expired |
| US6560255B1 | Method and apparatus for characterizing laser modules | Electricity | 9 | Expired |
| US9941565B2 | Isolator and method of forming an isolator | Electricity | 9 | Active |
| US6500521B2 | Stepped etalon | Emerging Cross-Sectional Technologies | 7 | Expired |
| US10204732B2 | Dielectric stack, an isolator device and method of forming an isolator device | Electricity | 6 | Active |
| US11044022B2 | Back-to-back isolation circuit | Electricity | 4 | Active |
| US6462876B1 | Multi-wavelength etalon | Physics | 4 | Expired |
| US9817087B2 | Sensor with magnetroesitive and/or thin film element abutting shorting bars and a method of manufacture thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US6926841B2 | Stepped etalon | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6920168B1 | Optical assembly | Electricity | 1 | Expired |
| US11450469B2 | Insulation jacket for top coil of an isolated transformer | Electricity | 1 | Active |
| US11476045B2 | Electric field grading protection design surrounding a galvanic or capacitive isolator | Electricity | 1 | Active |
| US7187447B1 | Fabry-perot stepped etalon with improved transmittance characteristics | Physics | 0 | Expired |
| US11798741B2 | Electric field grading protection design surrounding a galvanic or capacitive isolator | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.