Minoru Sato
152Patents
30h-index
230Co-inventors
93Inventor score
Filing activity: Aug 9, 1974 → Feb 24, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5585889A | Process cartridge and image forming apparatus | Physics | 279 | Expired |
| US5331373A | Image forming apparatus, process cartridge mountable within it and method for attaching photosensitive drum to process cartridge | Physics | 261 | Expired |
| US5452056A | Image forming apparatus, process cartridge mountable within it and method for attaching photosensitive drum to process cartridge | Physics | 244 | Expired |
| US5966566A | Recycle method for process cartridge and image forming apparatus | Physics | 183 | Expired |
| US7200349B2 | Parts, and part supplying methods | Emerging Cross-Sectional Technologies | 175 | Expired |
| US6937832B2 | PROCESS CARTRIDGE, MOUNTABLE TO AN IMAGE FORMING APPARATUS, HAVING FIRST CONTACT PORTION TO BE GUIDED BY A GUIDE WHEN MOUNTED AND SECOND CONTACT PORTION TO LIMIT CARTRIDGE ROTATION OR MOVEMENT WHEN MOUNTED, AND IMAGE FORMING APPARATUS MOUNTING SUCH A PROCESS CARTRIDGE | Physics | 163 | Expired |
| US6898399B2 | Electrophotographic photosensitive drum process cartridge and electrophotographic image forming apparatus | Physics | 153 | Expired |
| US6131007A | Developing device, process cartridge and electrophotographic image forming apparatus | Physics | 151 | Expired |
| US5940658A | Toner frame and process cartridge | Physics | 132 | Expired |
| US5870654A | Process cartridge remanufacturing method and process cartridge | Physics | 121 | Expired |
| US6185390A | Electrophotographic image forming apparatus having process cartridge with particular arrangement of electrical contacts | Physics | 111 | Expired |
| US5911096A | Image forming apparatus on which a process cartridge is detachably mounted and a process cartridge detachably mountable to a main body of an image forming apparatus including a grip portion | Physics | 102 | Expired |
| US5528341A | Process cartridge with rotary member having bearing attachment portions of different diameters, and method for refusing such a rotary member | Physics | 100 | Expired |
| US6075957A | Process cartridge and electrophotographic image forming apparatus | Physics | 98 | Expired |
| US6104894A | Developer container | Physics | 77 | Expired |
| US5974288A | Electrophotographic image forming apparatus | Emerging Cross-Sectional Technologies | 76 | Expired |
| US6714749B2 | Cartridge detachably mountable on image forming apparatus | Physics | 72 | Expired |
| US6188856A | Developing device, process cartridge, electrophotographic image forming apparatus, agitation support member and agitating member | Physics | 70 | Expired |
| US7155140B2 | Process cartridge and image forming apparatus | Physics | 67 | Expired |
| US6640066B2 | End member, developer-containing portion, and process cartridge | Physics | 67 | Expired |
| US7283766B2 | Process cartridge and image forming apparatus | Physics | 62 | Active |
| US5220648A | High-speed search system for image data storage | Emerging Cross-Sectional Technologies | 59 | Expired |
| US6754912B1 | Human body cleaner | Performing Operations; Transporting | 58 | Expired |
| US6895199B2 | PROCESS CARTRIDGE INCLUDING A PROTRUDING MEMBER ENGAGING A REGULATING GUIDE OF AN ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS TO WHICH THE PROCESS CARTRIDGE IS ATTACHABLE AND FROM WHICH THE CARTRIDGE IS DETACHABLE AND SUCH AN ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS | Physics | 58 | Expired |
| US4885704A | Electronic document filing apparatus with icon selection | Electricity | 54 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.