Gemtech
7Patents
3Active
7Granted
39Portfolio score
Filing activity: Mar 21, 1991 → Feb 12, 2014
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5189751A | Vibrating toothbrush using a magnetic driver | Human Necessities | 325 | Expired |
| US5378153A | High performance acoustical cleaning apparatus for teeth | Human Necessities | 149 | Expired |
| US5263218A | Vibrating toothbrush using a magnetic driver | Human Necessities | 118 | Expired |
| US5309590A | Dentifrice/medication dispensing toothbrush | Human Necessities | 95 | Expired |
| US8991551B2 | Weapon silencers and baffles for weapon silencers | Mechanical Engineering; Lighting; Heating | 32 | Active |
| US8910745B2 | Ported weapon silencer with spiral diffuser | Emerging Cross-Sectional Technologies | 26 | Active |
| US8991552B2 | Weapon silencer and method of making weapon silencer | Emerging Cross-Sectional Technologies | 23 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.