Richard R. Watson
28Patents
13h-index
10Co-inventors
78Inventor score
Filing activity: Sep 4, 1981 → May 26, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5771931A | High pressure wear resistant pilot valve | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4493335A | Shear valve | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5901749A | Three-way poppet valve | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6651696B2 | Relief valve | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4856557A | Sliding metal seal valve mechanism | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6318400A | Low interflow hydraulic shuttle valve | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4793590A | Piloted check valve | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6983803B2 | Equalizer valve and associated method for sealing a fluid flow | Fixed Constructions | 20 | Expired |
| US7159616B2 | Dual path hydraulic coupling | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6973936B2 | Fluid injection system | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4456028A | Relief gate valve | Emerging Cross-Sectional Technologies | 17 | Expired |
| US9697326B1 | Topology graph optimization | Physics | 14 | Active |
| US6745838B2 | Chemical injection control system and method for multiple wells | Fixed Constructions | 14 | Expired |
| US6571822B2 | Low blow down relief valve | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6568418B1 | Precision regulator | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6527010B1 | Single pilot dual pulse spool valve | Emerging Cross-Sectional Technologies | 8 | Expired |
| USD519283S1 | Liquid applicator head assembly | General | 7 | Expired |
| US7520291B2 | Pressure-compensated, subsea chemical injection valve | Emerging Cross-Sectional Technologies | 7 | Active |
| US9255465B2 | Method for autonomous control of a chemical injection system for oil and gas wells | Emerging Cross-Sectional Technologies | 7 | Active |
| US8555914B2 | Method for autonomous control of a chemical injection systems for oil and gas wells | Emerging Cross-Sectional Technologies | 7 | Active |
| US6497251B1 | Hydraulic latching spool valve | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6983922B2 | Piloted directional control valve | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9523262B2 | Method for autonomous control of a chemical injection system for oil and gas wells | Emerging Cross-Sectional Technologies | 1 | Active |
| US10288184B2 | Metal reinforced seal plate for pilot actuated spool valve | Emerging Cross-Sectional Technologies | 1 | Active |
| US8262367B2 | Fault-tolerant chemical injection system for oil and gas wells | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.