Valtek, Inc.
7Patents
0Active
7Granted
27Portfolio score
Filing activity: Feb 10, 1984 → Aug 14, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5251148A | Integrated process control valve | Emerging Cross-Sectional Technologies | 104 | Expired |
| US4567915A | Anti-cavitation low-noise control valve cage trim for high pressure reducing service in liquid or gaseous flow | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5884894A | Inner-loop valve spool positioning control apparatus | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5386967A | Ball valve coupling | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5566923A | Fluid valves | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5974945A | Pneumatic valve positioner with adjustable gain | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5282489A | Fluid pressure modulator | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.