Hitoshi Toma
15Patents
8h-index
30Co-inventors
72Inventor score
Filing activity: Dec 14, 1977 → Sep 7, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5428249A | Photovoltaic device with improved collector electrode | Emerging Cross-Sectional Technologies | 70 | Expired |
| US5397401A | Semiconductor apparatus covered with a sealing resin composition | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4618552A | Light receiving member for electrophotography having roughened intermediate layer | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6214636A | Photovoltaic device with improved collector electrode | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5112656A | Coating method suitable for use in production of photosensitive member for electrophotography | Performing Operations; Transporting | 14 | Expired |
| US4617245A | Light receiving member having tapered reflective surfaces between substrate and light receiving layer | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4924282A | Image reading device with moisture resistant layer | Electricity | 11 | Expired |
| US4203764A | Polyester or polyurethane coated electrostatic image holding member | Physics | 8 | Expired |
| US4174883A | Rear projection screen | Physics | 7 | Expired |
| US7528182B2 | Process for producing colorant dispersoid | Physics | 7 | Active |
| US5017988A | Image reading device with protective layers | Electricity | 5 | Expired |
| US4439258A | Method for covering with cylindrically shaped heat-shrinkable film | Physics | 3 | Expired |
| US4535043A | Electrophotographic photosensitive member | Chemistry; Metallurgy | 3 | Expired |
| US4943819A | Image holding member and image forming device | Physics | 3 | Expired |
| US4559260A | Image holding member having protective layers | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.