Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10495505 | Capacitance liquid level sensor | Tetsuya Tokunaga, Takayasu Otagaki, Kazuyoshi Ishikawa | 2019-12-03 |
| 6721539 | Communications device retroreflecting incident modulated radiation | Dominic O'Brien, David John Edwards, Grahame Edward Faulkner | 2004-04-13 |
| 5657407 | Optical waveguide coupling device having a parallelogramic grating profile | Ming-Jun Li | 1997-08-12 |
| 5525999 | Multi-receiver master control station for differential GPS and method | Thomas M. King | 1996-06-11 |