Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5523963 | Logic structure and circuit for fast carry | by William S. Carter, administrator, Charles R. Erickson, Edmond Y. Cheung | 1996-06-04 |
| 5488316 | Circuit for selecting a bit in a look-up table | Ross H. Freeman | 1996-01-30 |
| 5432719 | Distributed memory architecture for a configurable logic array and method for using distribution memory | Ross H. Freeman | 1995-07-11 |
| RE34808 | TTL/CMOS compatible input buffer with Schmitt trigger | — | 1994-12-20 |
| 5343406 | Distributed memory architecture for a configurable logic array and method for using distributed memory | Ross H. Freeman | 1994-08-30 |
| 5295090 | Logic structure and circuit for fast carry | William S. Carter, Charles S. Erickson, Edmond Y. Cheung | 1994-03-15 |
| 5267187 | Logic structure and circuit for fast carry | William S. Carter, Charles S. Erickson, Edmond Y. Cheung | 1993-11-30 |
| 5148390 | Memory cell with known state on power up | — | 1992-09-15 |
| 5140193 | Programmable connector for programmable logic device | Ross H. Freeman, Khue Duong, Charles R. Erickson, William S. Carter | 1992-08-18 |
| 4902910 | Power supply voltage level sensing circuit | — | 1990-02-20 |
| 4855619 | Buffered routing element for a user programmable logic device | William S. Carter | 1989-08-08 |
| 4835418 | Three-state bidirectional buffer | — | 1989-05-30 |
| 4821233 | 5-transistor memory cell with known state on power-up | — | 1989-04-11 |
| 4820937 | TTL/CMOS compatible input buffer | — | 1989-04-11 |
| 4783607 | TTL/CMOS compatible input buffer with Schmitt trigger | — | 1988-11-08 |
| 4750155 | 5-Transistor memory cell which can be reliably read and written | — | 1988-06-07 |