Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6449615 | Method and system for maintaining the integrity of links in a computer network | Chao Liu, Michael J. Hillberg, James W. Kelly, Jr., Clifford P. Van Dyke | 2002-09-10 |
| 6230212 | Method and system for the link tracking of objects | Edward Jung | 2001-05-08 |
| 5742284 | Object based system comprising weak links | Hugh Duggan | 1998-04-21 |
| 5721919 | Method and system for the link tracking of objects | Edward Jung | 1998-02-24 |
| 5619638 | Object based computer system having representation objects for providing interpretative views onto a data object | Hugh Duggan | 1997-04-08 |
| 5615336 | Selective user coupling for shared object oriented computer system | Christopher J. Robson, Hugh Duggan | 1997-03-25 |
| 5584035 | Object based system comprising user interface permitting manipulation of objects by users | Hugh Duggan | 1996-12-10 |
| 5572731 | Sequentially navigated object oriented computer system | Christopher J. Robson, Hugh Duggan | 1996-11-05 |
| 5428785 | Distributed computer system log-on device for storing and retrieving a user's view of objects at log-off | Hugh Duggan | 1995-06-27 |