Charles D. Morrill
33Patents
16h-index
10Co-inventors
78Inventor score
Filing activity: Dec 5, 1974 → Nov 20, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4444250A | Flow diverter | Emerging Cross-Sectional Technologies | 155 | Expired |
| US4502534A | Flow diverter | Emerging Cross-Sectional Technologies | 103 | Expired |
| US5655745A | Low profile and lightweight high pressure blowout preventer | Emerging Cross-Sectional Technologies | 81 | Expired |
| US6173770A | Shear ram for ram-type blowout preventer | Fixed Constructions | 66 | Expired |
| US4496173A | Threaded coupling | Fixed Constructions | 40 | Expired |
| US4097069A | Marine riser connector | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US5343946A | High pressure packer for a drop-in check valve | Fixed Constructions | 32 | Expired |
| US4363465A | Extreme temperature, high pressure balanced, rising stem gate valve with super preloaded, stacked, solid lubricated, metal-to-metal seal | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4554976A | Test tool for subsea blowout preventer stack | Fixed Constructions | 29 | Expired |
| US4264054A | Metal-to-metal seat hub seals | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4056272A | Seal | Fixed Constructions | 26 | Expired |
| US4109942A | Seal | Fixed Constructions | 23 | Expired |
| US5255890A | Ram type blowout preventer | Fixed Constructions | 21 | Expired |
| US4513823A | Cylindrical gate valve apparatus and method | Fixed Constructions | 16 | Expired |
| US6089321A | Pressure balanced choke and kill line connector | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4476935A | Safety valve apparatus and method | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4346919A | Remote automatic make-up stab-in sealing system | Fixed Constructions | 16 | Expired |
| US4476897A | Flowline connector seal | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4402773A | Remote automatic make-up stab-in sealing system | Fixed Constructions | 13 | Expired |
| US3987419A | High speed information processing system | Physics | 13 | Expired |
| US5645098A | Low profile and lightweight high pressure blowout preventer | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4382717A | Connection of underwater lines | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4477205A | Apparatus for connecting underwater flow line hubs | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4371291A | Underwater flowline connector | Fixed Constructions | 11 | Expired |
| US5647572A | Low profile and lightweight high pressure blowout preventer | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.