Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6014327 | Memory apparatus including programmable non-volatile multi-bit memory cell, and apparatus and method for demarcating memory states of the cell | — | 2000-01-11 |
| 6011716 | Memory apparatus including programmable non-volatile multi-bit memory cell, and apparatus and method for demarcating memory states of the cell | — | 2000-01-04 |
| 6002614 | Memory apparatus including programmable non-volatile multi-bit memory cell, and apparatus and method for demarcating memory states of the cell | — | 1999-12-14 |
| 5872735 | Electrically alterable non-volatile memory with N-bits per cell | — | 1999-02-16 |
| 5764571 | Electrically alterable non-volatile memory with N-bits per cell | — | 1998-06-09 |
| 5717779 | Filtering illumination for image lift | David J. Concannon, John Vala | 1998-02-10 |
| 5701361 | Adjusting illumination for image lift | Ted Concannon, John Vala | 1997-12-23 |
| 5513274 | Adjusting illumination for image lift to match camera | David J. Concannon, John Vala | 1996-04-30 |
| 5422474 | Methods for document illumination | John Vala | 1995-06-06 |
| 5408085 | Document imaging system with human-eye response photoptic filter means | John Vala | 1995-04-18 |
| 5394362 | Electrically alterable non-voltatile memory with N-bits per memory cell | — | 1995-02-28 |
| 5313070 | Check imaging illumination with focus/defocus and fibre optic light guide means | John Vala | 1994-05-17 |
| 5259043 | Filtering illumination for image lift | David J. Concannon, John Vala | 1993-11-02 |
| 5218569 | Electrically alterable non-volatile memory with n-bits per memory cell | — | 1993-06-08 |
| 5155776 | Filtering illumination for image lift | David J. Concannon, John Vala | 1992-10-13 |
| 5089713 | Document-imaging illumination arrangements with intensity with adjustment | John Vala | 1992-02-18 |
| 5063599 | Electronic image lift | David J. Concannon, Gary Copenhaver, Johan P. Bakker, John Vala, Clive E. Catchpole | 1991-11-05 |
| 5003189 | Document-imaging illumination with fibre-optic intensity-adjust | John Vala | 1991-03-26 |