Minoru Umeda
13Patents
6h-index
23Co-inventors
66Inventor score
Filing activity: Feb 24, 1988 → Sep 10, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6521386B1 | Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor | Physics | 35 | Expired |
| US5677094A | Electrophotographic photoconductor | Physics | 33 | Expired |
| US5547790A | Electrophotographic photoconductor containing polymeric charge transporting material in charge generating and transporting layers | Physics | 30 | Expired |
| US5804343A | Electrophotographic photoconductor | Physics | 23 | Expired |
| US4822705A | Electrophotographic photoconductor with layer preventing charge injection | Physics | 13 | Expired |
| US4863822A | Electrophotographic photoconductor comprising charge generating and transport layers containing adjuvants | Physics | 12 | Expired |
| US5749029A | Electrophotographic process and apparatus therefor | Physics | 5 | Expired |
| US7972743B2 | Membrane electrode assembly, method for producing the same, and solid state polymer fuel cell | Emerging Cross-Sectional Technologies | 4 | Active |
| US6590696B2 | Image display medium and image display device using the image display medium | Physics | 4 | Expired |
| US7960070B2 | Electrocatalyst for ethanol oxidation and direct ethanol fuel cell using the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US7121826B2 | Method of manufacturing an orthodontic model, and an orthodontic model produced thereby | Human Necessities | 1 | Expired |
| US8586270B2 | Electrophotographic photoconductor, electrophotographic method, and electrophotographic apparatus | Physics | 0 | Active |
| US9954239B2 | Solid polymer power generation or electrolysis method and system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.