Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8640527 | Pipeline leakage-sensing device | — | 2014-02-04 |
| 6351732 | Tactile and visual hearing aids utilizing sonogram pattern | Edward R. McRae | 2002-02-26 |
| 6230139 | Tactile and visual hearing aids utilizing sonogram pattern recognition | Edward R. McRae | 2001-05-08 |
| 5392077 | Projection TV light controller | — | 1995-02-21 |
| 4707064 | Optical mixing/demixing device | Jerzy A. Dobrowolski | 1987-11-17 |
| 4686533 | Optoelectronically switched phase shifter for radar and satellite phased array antennas | Robert I. MacDonald, Arthur L. Poirier | 1987-08-11 |
| 4506151 | Optoelectronic logic | R. Ian MacDonald, Robert H. Hum | 1985-03-19 |
| 4369371 | Broadband high speed optoelectronic semiconductor switch | R. Ian MacDonald, Robert S. H. Hum, Brian S. Kawasaki | 1983-01-18 |
| 4368385 | Optoelectronic switches | Hiroshi Kanbe | 1983-01-11 |
| 4286171 | Optoelectric cross-point switch | R. Ian MacDonald | 1981-08-25 |
| 4232385 | Frequency division multiplexing system for optical transmission of broadband signals | Takeshi Ozeki | 1980-11-04 |
| 4195931 | Clear air turbulence detector | — | 1980-04-01 |
| 4193662 | Broadband switching system utilizing optical fiber waveguides | — | 1980-03-18 |