Masahiro Tomita
71Patents
24h-index
122Co-inventors
91Inventor score
Filing activity: Jun 24, 1974 → Jul 17, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4516993A | Carbon particulates cleaning device | Emerging Cross-Sectional Technologies | 69 | Expired |
| US4553059A | Piezoelectric actuator and a piezoelectric pump injector incorporating the same | Mechanical Engineering; Lighting; Heating | 64 | Expired |
| US4450682A | Carbon particulates cleaning device for diesel engine | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4505726A | Exhaust gas cleaning device | Emerging Cross-Sectional Technologies | 59 | Expired |
| US4535588A | Carbon particulates cleaning device for diesel engine | Mechanical Engineering; Lighting; Heating | 58 | Expired |
| US5876600A | Element exchange type filter | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4535589A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 55 | Expired |
| US9550834B2 | Method for preparing glycan-hydrolyzed antibody, and homogeneous glycosylated antibody | Physics | 52 | Active |
| US4404007A | Exhaust gas cleaning element | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4570098A | Temperature compensated stack of piezoelectric elements | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US4987446A | Process unit cartridge for an electrophotographic apparatus | Physics | 48 | Expired |
| US4335574A | Carbon particles removing device | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4485622A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4523935A | Electrical heater retained in a porous ceramic structure | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4363644A | Filter for purifying exhaust gas | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4381929A | Apparatus for adsorbing fuel vapor | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5902479A | Oil filter incorporating a drain valve | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4838233A | Pilot injection system for fuel injection pump | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US6495838B1 | Sample heating holder, method of observing a sample and charged particle beam apparatus | Electricity | 32 | Expired |
| US4436538A | Filter for cleaning exhaust gases from diesel engine | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4752712A | Piezoelectric laminate stack | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4441899A | Dust collecting filter | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5004945A | Piezoelectric type actuator | Electricity | 27 | Expired |
| US4386497A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4464185A | Exhaust gas filter | Emerging Cross-Sectional Technologies | 22 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.