Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5825547 | Diffractive device for generating one or more diffracting images including a surface relief structure at least partly arranged in a series of tracks | — | 1998-10-20 |
| 5811775 | Optical data element including a diffraction zone with a multiplicity of diffraction gratings | — | 1998-09-22 |
| 5428479 | Diffraction grating and method of manufacture | — | 1995-06-27 |
| 5341406 | Sliding lance guide flexible lance system | Stephen C. Jens, Bernard Sawaf, deceased, Paul F. Viola, Paul R. Belkus | 1994-08-23 |
| 5286154 | In bundle foreign object search and retrieval apparatus | Stephen C. Jens, Michael W. Osborne, Paul F. Viola, Christos Athanassiu | 1994-02-15 |
| 5065703 | Flexible lance for steam generator secondary side sludge removal | — | 1991-11-19 |
| 5023847 | Boom event analyzer recorder | — | 1991-06-11 |
| 4974616 | Removing coatings from cathode ray tubes or parts thereof | — | 1990-12-04 |
| 4952185 | Separation of components of cathode ray tubes | — | 1990-08-28 |
| 4827953 | Flexible lance for steam generator secondary side sludge removable | — | 1989-05-09 |
| 4816987 | Microprocessor-based control and diagnostic system for motor operated valves | Boyd P. Brooks | 1989-03-28 |
| 4694390 | Microprocessor-based control and diagnostic system for motor operated valves | — | 1987-09-15 |
| 4497104 | Separation device manufacture | Tom A. Fowles, Frank M. Richmond, Henry Tobiasz | 1985-02-05 |