David Keiser
7Patents
4h-index
2Co-inventors
43Inventor score
Filing activity: Dec 9, 1996 → Mar 24, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6948699B1 | Retainer for a ball valve seat | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US7347408B2 | High differential pressure, low torque precision temperature control valve | Emerging Cross-Sectional Technologies | 10 | Active |
| US7448410B2 | High differential pressure, low torque precision temperature control valve | Emerging Cross-Sectional Technologies | 7 | Active |
| US5712936A | Hybrid bi-directional three color wave division multiplexer and method using same | Electricity | 7 | Expired |
| US7971854B2 | Replaceable valve shaft sealing system | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8100149B2 | Combined pressure, temperature and air vent device | Physics | 2 | Active |
| US9664283B2 | Captivated seal assembly | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.