Katsuhiro Sato
125Patents
13h-index
113Co-inventors
89Inventor score
Filing activity: Sep 14, 1987 → Mar 1, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6653701B1 | Semiconductor device and production method thereof | Emerging Cross-Sectional Technologies | 90 | Expired |
| US5066878A | Small-sized electric motor housing circuit breaker | Electricity | 36 | Expired |
| US5456989A | Photosensitive body for electrophotography | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5639581A | Charge transporting polymer, process for producing the same, and organic electronic device containing the same | Physics | 32 | Expired |
| US5734003A | Charge transporting polymer, process for producing the same, and organic electronic device containing the same | Physics | 24 | Expired |
| US5955528A | Polymeric composite material and process for manufacturing the same | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6670052B2 | Organic light emitting diode | Emerging Cross-Sectional Technologies | 22 | Expired |
| US8153488B2 | Method for manufacturing nonvolatile storage device | Electricity | 21 | Active |
| US5394205A | Image reading apparatus | Electricity | 21 | Expired |
| US5102757A | Electrophotographic photosensitive member and image forming process | Chemistry; Metallurgy | 20 | Expired |
| US4933245A | Electrophotographic photoreceptor | Physics | 19 | Expired |
| US4833054A | Electrophotographic photoreceptor having a bisazo compound | Physics | 17 | Expired |
| US5153085A | Electrophotographic photosensitive member and image forming process | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5011757A | Electrophotographic photoreceptor containing a fluorene derivative | Chemistry; Metallurgy | 13 | Expired |
| US5028505A | Electrophotographic photoreceptor | Physics | 12 | Expired |
| US5075487A | Fluorene derivative | Chemistry; Metallurgy | 11 | Expired |
| US4990634A | Novel tetracyanoanthraquinodimethane derivatives and process for producing same | Physics | 11 | Expired |
| US5963360A | Nonlinear optical element and process for the preparation of same | Physics | 10 | Expired |
| US5011969A | Fluorene derivative and process for preparation thereof | Chemistry; Metallurgy | 10 | Expired |
| US5698355A | Photosensitive body for electrophotography | Physics | 10 | Expired |
| US5023356A | Novel tetracyanoanthraquinodimethane derivatives and process for producing same | Physics | 10 | Expired |
| US5618646A | Electrophotographic photoreceptors with anti-oxidizing agents | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5595847A | Photoconductor having a cured layer of an amino resin-phenol resin copolycondensate | Physics | 9 | Expired |
| US8174682B2 | Shape measuring instrument with light source control | Physics | 8 | Active |
| US7166859B2 | Organic semiconductor transistor element, semiconductor device using the same, and process for producing the semiconductor device | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.