Toshio Murata
55Patents
11h-index
87Co-inventors
81Inventor score
Filing activity: Apr 3, 1981 → Jul 5, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6133587A | Silicon carbide semiconductor device and process for manufacturing same | Electricity | 99 | Expired |
| US5744826A | Silicon carbide semiconductor device and process for its production | Emerging Cross-Sectional Technologies | 64 | Expired |
| US7980696B1 | Ophthalmic photographing apparatus | Human Necessities | 48 | Active |
| US7510282B2 | Ophthalmic photographing apparatus | Human Necessities | 40 | Active |
| US8721078B2 | Fundus photographing apparatus | Human Necessities | 20 | Active |
| US4420264A | Structure for preventing the rotating of a register ring of a diver's watch | Physics | 16 | Expired |
| US6021099A | Solar-cell watch dial and process for producing the same | Physics | 13 | Expired |
| US8534835B2 | Optical tomographic image photographing apparatus | Physics | 13 | Active |
| US6310836A | Timepiece | Physics | 12 | Expired |
| US7444803B2 | Exhaust gas control apparatus for engine and method for producing same | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5357488A | Watch having a sensor | Physics | 11 | Expired |
| US9044166B2 | Optical tomographic image photographing apparatus | Physics | 9 | Active |
| US4479724A | Water-resisting structure for a watch | Physics | 8 | Expired |
| US6169299A | Semiconductor device | Electricity | 7 | Expired |
| US9125593B2 | Method of observing a three-dimensional image of examinee's eye | Human Necessities | 7 | Active |
| US6251538A | Positive active material for alkaline battery and electrode using the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8931904B2 | Control method of a fundus examination apparatus | Human Necessities | 7 | Active |
| US6060731A | Insulated-gate semiconductor device having a contact region in electrical contact with a body region and a source region | Electricity | 7 | Expired |
| US4374624A | Sound emitting device for electronic timepiece | Electricity | 6 | Expired |
| US6241790A | Electrode, cell using the same and process for producing electrode | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4507184A | Method for finishing matted surface on a metal-made article for personal ornament | Chemistry; Metallurgy | 6 | Expired |
| US4785982A | Watch case and band attachment structure | Emerging Cross-Sectional Technologies | 5 | Expired |
| US9681803B2 | Method of observing a three-dimensional image of examinee's eye | Human Necessities | 5 | Active |
| US8419186B2 | Fundus observation apparatus | Human Necessities | 4 | Active |
| US10502118B2 | Exhaust heat recovery device | Emerging Cross-Sectional Technologies | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.