Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5222133 | Method of protecting computer software from unauthorized execution using multiple keys | Wayne W. Chou, Joseph M. Kulinets | 1993-06-22 |
| 5081676 | Method and apparatus for protecting multiple copies of computer software from unauthorized use | Wayne W. Chou, Joseph M. Kulinets | 1992-01-14 |
| 4932054 | Method and apparatus for protecting computer software utilizing coded filter network in conjunction with an active coded hardware device | Wayne W. Chou | 1990-06-05 |
| 4562306 | Method and apparatus for protecting computer software utilizing an active coded hardware device | Wayne W. Chou | 1985-12-31 |