Robert D. MacDonald
22Patents
13h-index
10Co-inventors
78Inventor score
Filing activity: Mar 14, 1975 → Jun 27, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5340018A | Thermostatically controlled mixing valve | Physics | 79 | Expired |
| US4458839A | Thermostatic valve assembly | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4453567A | Valve assembly | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4981156A | Temperature and volume control valve assembly | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4901750A | Temperature and volume control valve assembly | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4163474A | Internally finned tube | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5323554A | Tube identification band | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5343608A | Method of forming an identification band | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4200169A | Stethoscope | Human Necessities | 28 | Expired |
| US4396353A | Submersible sump pump | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4609177A | Valve | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4103392A | Door closing apparatus | Fixed Constructions | 16 | Expired |
| US5690051A | Pet litter separation system including pull-out cover | Human Necessities | 13 | Expired |
| US4562994A | Valve | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4640457A | Thermostatic valve assembly | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4699172A | Handle valve assembly | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4287641A | Self-closing hinge | Fixed Constructions | 5 | Expired |
| USRE28786E | Hinge for latchless door | General | 4 | Expired |
| US4192052A | Method for bonding a heat exchanger fin to a tube | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4429712A | Faucet | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5386079A | Wastewater treatment process | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4005748A | Annular heat exchanger fins | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.