Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9410375 | Rapid installation and removal ladder slide prevention system | Kathy L Page | 2016-08-09 |
| 6311305 | Method and system for overriding error correction | Baruch Sollish | 2001-10-30 |
| 6112324 | Direct access compact disc, writing and reading method and device for same | Babak Tehranchi | 2000-08-29 |
| 5373513 | Shift correction code system for correcting additive errors and synchronization slips | Hugh M. Hilden, Edward J. Weldon, Jr. | 1994-12-13 |
| 5271016 | Shift-correcting code system with efficient symbol-to-channel bit transformation | Hugh M. Hilden | 1993-12-14 |
| 5257270 | Shift-correction code rate-enhancing parity encoding/decoding | Hugh M. Hilden, Edward J. Weldon, Jr. | 1993-10-26 |
| 5220568 | Shift correcting code for channel encoded data | Edward J. Weldon, Jr., Hugh M. Hilden | 1993-06-15 |
| 5115336 | Photorefractive system and process for its use | Jay S. Schildkraut, Michael Scozzafava | 1992-05-19 |
| 4980262 | Producing a replicate video disc by a method of photographic contact printing | Harold T. Thomas | 1990-12-25 |
| 4672599 | Optical disc unit and method and apparatus for writing and/or reading information thereon | Frederick F. Geyer | 1987-06-09 |
| 4577306 | Method for optically writing and/or reading information on optical recording elements | Joseph J. Wrobel | 1986-03-18 |
| 4539573 | Protective construction for optical disk units | Alan B. Marchant | 1985-09-03 |
| 4538159 | Ceramic overcoated optical recording element | Mool C. Gupta, Joseph J. Wrobel | 1985-08-27 |
| 4530082 | Optical disc write/read employing passive focus maintenance | James A. Barnard | 1985-07-16 |
| 4475183 | Optical disk retrieval methods, media and systems employing digital data of high fractional bandwidth | Alan B. Marchant | 1984-10-02 |
| 4447899 | Optical disc method, media and apparatus for writing and/or reading information | Frederick F. Geyer | 1984-05-08 |
| 4419750 | Constant track width optical disk recording | — | 1983-12-06 |
| 4360908 | Physically optimized optical disc structure, method and apparatus | Joseph J. Wrobel | 1982-11-23 |
| 4359750 | Optical disc structure | — | 1982-11-16 |
| 4349901 | Apparatus and method for reading optical discs | — | 1982-09-14 |
| 4336545 | Optical disc structure, method and apparatus physically optimized for writing and reading with a single wavelength | Alan B. Marchant, Joseph J. Wrobel | 1982-06-22 |
| 4270130 | Thermal deformation record device with bleachable dye | Conrad G. Houle, Harold T. Thomas, Joseph J. Wrobel, Bruce G. Fike, deceased | 1981-05-26 |
| 4255764 | Film scanner employing optical splice technique for frame-rate conversion | — | 1981-03-10 |
| 4245247 | Hard copy reproduction from video disc information | Bruce G. Fike, deceased, Evan A. Edwards | 1981-01-13 |
| 4236183 | Optical configurations for a rotating polygon film scanner | — | 1980-11-25 |