Sumitaka Nogami
27Patents
9h-index
31Co-inventors
75Inventor score
Filing activity: May 20, 1974 → Aug 12, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5928824A | Electrophotographic photoconductor | Physics | 36 | Expired |
| US5456989A | Photosensitive body for electrophotography | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4444861A | Photo sensitive article for electrophotography containing charge transfer material | Emerging Cross-Sectional Technologies | 19 | Expired |
| US3956228A | Polyester resin composition for powder coatings prepared from endomethylenetetrahydrophthalic acid | Electricity | 17 | Expired |
| US5401600A | Photosensitive body for electrophotography | Physics | 17 | Expired |
| US5393627A | Photoconductor for electrophotography | Physics | 16 | Expired |
| US5972550A | Electrophotographic photoconductor and method of manufacturing same | Physics | 12 | Expired |
| US5595847A | Photoconductor having a cured layer of an amino resin-phenol resin copolycondensate | Physics | 9 | Expired |
| US5618646A | Electrophotographic photoreceptors with anti-oxidizing agents | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5612158A | Electrophotographic photoconductor and process for producing the same | Physics | 8 | Expired |
| US4463162A | Polynuclear fused aromatic ring type polymer and preparation thereof | Chemistry; Metallurgy | 7 | Expired |
| US5556728A | Photoconductor element of an electrophotographic device | Physics | 7 | Expired |
| US5561022A | Electrophotographic photoconductor | Physics | 6 | Expired |
| US5725982A | Photoconductor for electrophotography | Physics | 5 | Expired |
| US4444860A | Layered persistent photoconductive element comprises pigment layer and polymer layer containing polyvinyl carbazole | Physics | 5 | Expired |
| US4180652A | Polyester type powder coating composition | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4732832A | Electrophotographic photoconductor using aluminum phthalocyanine compound in charge generating layer | Physics | 5 | Expired |
| US5707766A | Electrophotographic photosensitive material | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5432034A | Photoconductor for electrophotography including an undercoating layer | Chemistry; Metallurgy | 4 | Expired |
| US5405725A | Photoconductor for electrophotography | Physics | 4 | Expired |
| US5733696A | Inverted-lamination organic positive-photoconductor for electrophotography | Physics | 4 | Expired |
| US5478685A | Photoconductor for electrophotography | Physics | 2 | Expired |
| US5700613A | Photoconductor for electrophotography | Physics | 1 | Expired |
| US5368966A | Photosensitive member for electrophotography with indole derivative | Physics | 1 | Expired |
| US5407767A | Photoconductors for electrophotography with indole and benzidine compounds | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.