Peter Opsvik
62Patents
18h-index
6Co-inventors
77Inventor score
Filing activity: Apr 14, 1975 → Jul 10, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4767160A | Device for use in a kneeling-like sitting position | Human Necessities | 72 | Expired |
| US4607882A | Chair with saddle shaped seat and members externally transversely therefrom | Human Necessities | 65 | Expired |
| US4109961A | Adjustable chair | Human Necessities | 56 | Expired |
| US4890886A | Tilting mechanism, preferably for a chair seat or similar article | Human Necessities | 51 | Expired |
| US5255957A | Arrangement in a chair, for example a combined chair | Human Necessities | 50 | Expired |
| USD283858S | Chair | General | 48 | Expired |
| US4328991A | Sitting device | Emerging Cross-Sectional Technologies | 41 | Expired |
| USD599129S1 | Chair | General | 40 | Expired |
| US4767159A | Chair having supporting member for the posterior and the shins, respectively, of a chair occupant | Human Necessities | 39 | Expired |
| US4653808A | Device for supporting a person in a seated position | Human Necessities | 27 | Expired |
| US4960305A | Air comprising supports for the posterior and the shins, respectively, of a chair occupant | Emerging Cross-Sectional Technologies | 26 | Expired |
| USD293049S | Chair | General | 25 | Expired |
| US5782532A | Arrangement in a chair, especially a chair for children | Human Necessities | 20 | Expired |
| US6053574A | Device for adjusting the tilting resistance of a chair seat | Human Necessities | 19 | Expired |
| USD271727S | Chair | General | 19 | Expired |
| US5490715A | Arrangement in a chair | Human Necessities | 19 | Expired |
| USD287669S | Chair | General | 19 | Expired |
| USD460871S1 | Chair | General | 18 | Expired |
| USD297690S | Combined chair base and shin support unit | General | 16 | Expired |
| USD292756S | Chair | General | 14 | Expired |
| US6095606A | Adjusting device for chairs | Human Necessities | 14 | Expired |
| USD370569S | Chair | General | 14 | Expired |
| US5860696A | Cushion for a chair, especially a detachable cushion for a child's seat | Human Necessities | 13 | Expired |
| USD292453S | Chair | General | 12 | Expired |
| US7134677B2 | Foldable scooter | Performing Operations; Transporting | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.