Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5532920 | Data processing system and method to enforce payment of royalties when copying softcopy books | Thomas V. Hartrick, Nicholas J. Sabia | 1996-07-02 |
| 5367621 | Data processing method to provide a generalized link from a reference point in an on-line book to an arbitrary multimedia object which can be dynamically updated | Amy Cohen, Christopher F. Gleason, Donald Ray Hyatt, Michael E. Moran, Alan J. Wecker | 1994-11-22 |
| 5214696 | Data processing system and method to produce softcopy book readers which are limited to reading only books published by a specific publisher | Harry R. Keiser, II, Jay Unger | 1993-05-25 |
| 4949278 | Expert system architecture | Kenneth Davies, Walter C. Geddes, Mark J. Kline, Alexander Tony Maluta, Bruce E. Naylor +1 more | 1990-08-14 |