Bertram L. Morrison
11Patents
9h-index
1Co-inventors
58Inventor score
Filing activity: Dec 24, 1975 → Feb 17, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4068821A | Valve seat ring having a corner groove to receive an elastic seal ring | Mechanical Engineering; Lighting; Heating | 89 | Expired |
| US4163544A | Two piece composite valve seal ring construction | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US4709725A | Metal-to-metal seal structure | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4135546A | Stem packing assembly for gate valves and means for removal | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4098490A | Valve body-bonnet joint | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4177833A | Valves having a pressure equalizer across dual face seals | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4273309A | Valve mechanism incorporating universal seat spring | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4034959A | Valve seal retaining means | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4067542A | Valve seat construction having a resilient member around the perimeter of the seat member | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4247080A | Seal assembly for valves | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4081891A | Method of making a valve | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.