Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6085187 | Method and apparatus for navigating multiple inheritance concept hierarchies | Steffen Michael Fohn, Arthur Greef, Gregory Christopher Hansen | 2000-07-04 |
| 5953726 | Method and apparatus for maintaining multiple inheritance concept hierarchies | Frank Castellucci, Steffen Michael Fohn, Arthur Greef, Thomas R. Maguire, John F. Schumacher +1 more | 1999-09-14 |
| D261861 | Pantyhose package | — | 1981-11-17 |