Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5118608 | Optical assay technique | Derek G. Layton, John H. Fisher, Robert M. Pettigrew, Satham Petty-Saphon | 1992-06-02 |
| 4978503 | Devices for use in chemical test procedures | Ian A. Shanks | 1990-12-18 |
| 4931384 | Optical assay technique | Derek G. Layton, John H. Fisher, Robert M. Pettigrew, Satham Petty-Saphon | 1990-06-05 |
| 4858099 | Resonant inverter | Thomas A. McMillan, Carl A. Brooks | 1989-08-15 |
| 4810658 | Photometric instruments, their use in methods of optical analysis, and ancillary devices therefor | Ian A. Shanks | 1989-03-07 |
| 4661821 | Vandalism-resistant UHF antenna | — | 1987-04-28 |
| 4580080 | Phase control ballast | — | 1986-04-01 |
| 4530566 | Optical fiber duplex coupler | Peter J. Taylor | 1985-07-23 |
| 4522482 | Information storage and retrieval | Robert M. Pettigrew, John D. Bradbrook, John H. Fisher | 1985-06-11 |
| 4459515 | Phase-controlled ballast having shifting control | — | 1984-07-10 |
| 4459653 | Apertured transformer and inverter using same | — | 1984-07-10 |
| 4333139 | Static inverter | Daniel V. Owen | 1982-06-01 |