Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637515 | Method and apparatus for reducing plunger seal wear on automatic casing swab lift systems | Ronald Bishop | 2003-10-28 |
| 5587993 | Optical tape cartridge having improved tape movement mechanism | — | 1996-12-24 |
| 5563867 | Optical tape duplicator | — | 1996-10-08 |
| 5521452 | Shock-resistant, electrostatically actuated pick-up for optical recording and playback | — | 1996-05-28 |
| 5504732 | Null inflection detection and pulse expand latch in an optical recording system | Kitchener Clark Wilson, Stephen K. Shu | 1996-04-02 |
| 5485437 | Shock-resistant, electrostatically actuated pick-up for optical recording and playback | — | 1996-01-16 |
| 5253713 | Gas and oil well interface tool and intelligent controller | Lawrence R. Lamp, John G. Corp | 1993-10-19 |
| 5077724 | Optical tape cartridge | — | 1991-12-31 |
| 5017414 | Method for manufacturing a second surface optical storage device | — | 1991-05-21 |
| 5002622 | Glass based optical disc manufacturing process | Kenneth L. Keester | 1991-03-26 |
| 4964934 | Optical disk manufacturing process | — | 1990-10-23 |
| 4908815 | Optical recording system utilizing proportional real-time feedback control of recording beam intensity | Stephen K. Shu, Kitchener Clark Wilson | 1990-03-13 |
| 4893297 | Disc-shaped member | — | 1990-01-09 |
| 4819223 | Video record disc | — | 1989-04-04 |
| 4615753 | Process for making a video record disc | — | 1986-10-07 |
| 4500484 | Process for making a video record disc | — | 1985-02-19 |
| 4342714 | Process for making video discs | Kenneth L. Keester | 1982-08-03 |
| RE30974 | Production of television signals from photographic disc recordings | Dean L. De Moss, Wayne Johnson | 1982-06-15 |