Robert J. Murphy
71Patents
13h-index
39Co-inventors
84Inventor score
Filing activity: Aug 23, 1976 → Aug 22, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4804179A | Multi function foldable exercise machine | Human Necessities | 77 | Expired |
| US5191752A | Elastomeric gel saddle | Performing Operations; Transporting | 66 | Expired |
| US6584833B1 | Apparatus and method for analyzing well fluid sag | Physics | 44 | Expired |
| US9284798B2 | Methods and compositions for treating subterranean formations with swellable lost circulation materials | Fixed Constructions | 43 | Active |
| US5368461A | Outside corner finishing tool | Fixed Constructions | 29 | Expired |
| US4062225A | Rotational viscometer and plastometer | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7506606B2 | Marine payload handling craft and system | Performing Operations; Transporting | 24 | Expired |
| US7134673B2 | Moving cart assemblies | Human Necessities | 22 | Expired |
| US6543276B2 | Oil well bore hole filter cake breaker fluid test apparatus and method | Physics | 20 | Expired |
| US4862817A | Water vehicle | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4571988A | Apparatus and method for measuring viscosity | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4919814A | System and method for treating wastewater collected from septic tanks and similar installation | Emerging Cross-Sectional Technologies | 18 | Expired |
| US9291044B2 | Method and apparatus for isolating and treating discrete zones within a wellbore | Fixed Constructions | 13 | Active |
| US8286703B2 | Apparatus and methods of flow testing formation zones | Fixed Constructions | 12 | Active |
| US7373730B2 | Tool for installing electrical boxes | Emerging Cross-Sectional Technologies | 10 | Active |
| US8151633B2 | Methods and systems for characterizing LCM particle plugging and rheology in real time | Physics | 10 | Active |
| US4949385A | Apparatus and method for making precipitation audible | Physics | 10 | Expired |
| US9134291B2 | Systems, methods and devices for analyzing drilling fluid | Fixed Constructions | 9 | Active |
| US10091440B1 | System and method for providing compressive infrared imaging | Electricity | 9 | Active |
| US9285355B2 | Method and apparatus for testing lost circulation materials for subterranean formations | Physics | 8 | Active |
| US10151677B2 | Real-time optical flow imaging to determine particle size distribution | Physics | 8 | Active |
| US4606891A | Electrode holder useful in a corrosion testing device | Physics | 8 | Expired |
| US5677478A | Pressure relief system for filtration testing apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7128157B2 | Method and apparatus for treating a well | Fixed Constructions | 7 | Expired |
| US6906535B2 | Method for characterizing water-in-oil emulsions using electrical wave forms | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.