Osamu Tamura
22Patents
9h-index
31Co-inventors
75Inventor score
Filing activity: Jan 31, 1996 → Apr 3, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5700616A | Developer for developing an electrostatic image and image forming method | Physics | 41 | Expired |
| US5750302A | Magnetic toner for developing electrostatic image, image forming process, and process cartridge | Physics | 21 | Expired |
| US6238834A | Magnetic toner for developing electrostatic images, process for producing it, image forming method and process cartridge | Physics | 17 | Expired |
| US5806473A | Engine injection system for multi-cylinder engine | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6405005B1 | Process cartridge and electrophotographic apparatus | Physics | 16 | Expired |
| US5858593A | Magnetic toner, apparatus unit and image forming method | Physics | 15 | Expired |
| US5671703A | Two-cycle engine | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6197470A | Toner, image forming method and apparatus unit | Physics | 10 | Expired |
| US5712070A | Toner for developing electrostatic image, image forming method, developing device and process cartridge | Physics | 9 | Expired |
| US7708459B2 | Low-temperature comparison calibrator for thermometers | Physics | 5 | Active |
| US6408152B1 | Process cartridge and electrophotographic apparatus | Physics | 4 | Expired |
| US8326208B2 | Paper discharge device and image forming apparatus | Physics | 2 | Active |
| US7358024B2 | Process for producing toner, and apparatus for modifying surfaces of toner particles | Physics | 2 | Expired |
| US7506830B2 | Apparatus for modifying surfaces of toner particles | Physics | 1 | Active |
| US8311333B2 | Area determination method, image compression method, image compression apparatus, and recording medium | Electricity | 1 | Active |
| US8986466B2 | Method for carburizing tantalum member, and tantalum member | Chemistry; Metallurgy | 1 | Active |
| US9042806B2 | Image forming apparatus and recording medium stacking apparatus | Performing Operations; Transporting | 1 | Active |
| US10081394B2 | Mounting structure of vehicular resin component | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8080068B2 | Light oil compositions | Chemistry; Metallurgy | 0 | Active |
| US6475686B2 | Fixing method | Physics | 0 | Expired |
| US9394134B2 | Image forming apparatus and recording medium stacking apparatus | Performing Operations; Transporting | 0 | Active |
| US8304991B2 | Organic electroluminescent element sealing composition and organic light-emitting device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.