Head Sport AG
16Patents
1Active
16Granted
30Portfolio score
Filing activity: Oct 7, 1991 → Sep 27, 2005 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5240247A | Racquet for ball games | Human Necessities | 24 | Expired |
| US5299822A | Plastic shell ski | Human Necessities | 21 | Expired |
| US7080849B2 | Ski, method of stiffening the ski and method of manufacturing the ski | Human Necessities | 19 | Expired |
| US7059028B2 | Method of making certain flexible piezoelectric films | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6106417A | Lightweight tennis racket having high frequency | Human Necessities | 16 | Expired |
| USD460135S1 | Racquet throat | General | 15 | Expired |
| USD468380S1 | Racquet throat | General | 13 | Expired |
| US7098578B2 | Flexible piezoelectric films | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6861782B2 | Flexible piezoelectric films | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7160286B2 | Racket with self-powered piezoelectric damping system | Human Necessities | 6 | Expired |
| US6974397B2 | Racket with self-powered piezoelectric damping system | Human Necessities | 5 | Expired |
| US8104776B2 | Snowboard binding | Human Necessities | 4 | Active |
| US7237793B2 | Snowboard binding | Human Necessities | 3 | Expired |
| US6059674A | Racquetball racquet | Human Necessities | 3 | Expired |
| US6074314A | Counterweight balancing system for game racquets | Human Necessities | 1 | Expired |
| US5893810A | Tennis rackets | Human Necessities | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.