Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7490683 | Curb-climbing power wheelchair | — | 2009-02-17 |
| 7104346 | Power wheelchair | — | 2006-09-12 |
| 6749262 | Adjustable hinge and support structure | Walter Watkins | 2004-06-15 |
| 6640916 | Mid-wheel drive power wheelchair | James P. Mulhern, Stephen J. Antonishak | 2003-11-04 |
| 6543798 | Anti-tip caster suspension for a wheelchair | Walter Watkins, Gerald White | 2003-04-08 |
| 6218140 | Enhancer for eukaryotic expression systems | Bernhard Fleckenstein, Frank Weber, Karoline Dorsch-Hasler, Gerhard Jahn, Michael Boshart | 2001-04-17 |
| 6199647 | Mid-wheel drive power wheelchair | James P. Mulhern, Stephen J. Antonishak | 2001-03-13 |
| 6186252 | Foldable midwheel drive power chair | James P. Mulhern, Gerald White, Stephen J. Antonishak | 2001-02-13 |
| 6176335 | Power wheelchair | James P. Mulhern, Stephen J. Antonishak | 2001-01-23 |
| 6129165 | Curb-climbing power wheelchair | James P. Mulhern, Stephen J. Antonishak, Gerald White | 2000-10-10 |
| 6000758 | Reclining lift chair | Carl A. Kollar, James P. Mulhern, Ronald Levi, Stephen J. Antonishak | 1999-12-14 |
| 5944131 | Mid-wheel drive power wheelchair | James P. Mulhern, Stephen J. Antonishak | 1999-08-31 |
| D404693 | Power wheelchair | — | 1999-01-26 |
| 5849522 | Enhancer for eukaryotic expression systems | Bernhard Fleckenstein, Frank Weber, Karoline Dorsch-Hasler, Gerhard Jahn, Michael Boshart | 1998-12-15 |
| D397645 | Motorized wheelchair | — | 1998-09-01 |
| 5695021 | Electrically-powered scooter for personal transport | Walter Kochan, Carl A. Kollar | 1997-12-09 |
| D384939 | Chair control | — | 1997-10-14 |
| 4983518 | Eukaryotic expression vectors with multimeric enhancer segments, a process for the preparation thereof and the use thereof | Nils G. Westin | 1991-01-08 |
| 4968615 | Deoxyribonucleic acid segment from a virus | Ulrich Koszinowski, Gunther Keil, Karoline Dorsch-Hasler | 1990-11-06 |