Marvin E. Beasley
8Patents
5h-index
—Co-inventors
50Inventor score
Filing activity: Aug 6, 1990 → Sep 19, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5313976A | Top entry ball valve and method of assembly | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6240946A | Switch valve | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5269347A | Fluid pressure isolator apparatus | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5097635A | Method and apparatus for automatic ball to seat lapping | Performing Operations; Transporting | 7 | Expired |
| US8646752B2 | Ball valve having multiple moveable seats | Emerging Cross-Sectional Technologies | 5 | Active |
| US8201574B2 | Bi-directional sealing ball valve | Emerging Cross-Sectional Technologies | 4 | Active |
| US5139229A | Ball valve and method of assembly | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8720855B2 | Ball valve having multiple moveable seats | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.