Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6816175 | Orthogonal browsing in object hierarchies | Birgit Hamp, Frank Neumann, Annette Opalka, Roland Seiffert | 2004-11-09 | $4,707,000 |
| 6446061 | Taxonomy generation for document collections | Jochen Doerre, Peter Gerstl, Sebastian Goeser, Roland Seiffert | 2002-09-03 | $9,688,000 |