Willibald Grammer
7Patents
0Active
7Granted
26Portfolio score
Filing activity: Nov 3, 1977 → Feb 3, 1986
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4461444A | Sprung vehicle seat | Performing Operations; Transporting | 60 | Expired |
| US4364605A | Seat with a seat plate of adjustable inclination and a backrest of adjustable inclination | Human Necessities | 38 | Expired |
| US4158160A | Driver's seat with automatic weight adjustment | Performing Operations; Transporting | 15 | Expired |
| US4544598A | Seat cushion with a textile cover | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4471934A | Driver's seat | Performing Operations; Transporting | 7 | Expired |
| US4739959A | Adjustable seat | Performing Operations; Transporting | 5 | Expired |
| US4484723A | Air-sprung seat | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.