Masayoshi Shimamura
36Patents
12h-index
42Co-inventors
81Inventor score
Filing activity: Sep 19, 1986 → Mar 27, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6808773B2 | Shielding base member and method of manufacturing the same | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5618647A | Magnetic toner and image forming method | Physics | 29 | Expired |
| US4837098A | Color filter and method of producing the same | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7796926B2 | Developing apparatus and electrophotographic image-forming apparatus | Physics | 22 | Active |
| US5716746A | Magnetic toner and process for producing magnetic toner | Physics | 21 | Expired |
| US6122473A | Developer carrying member for carrying developer, apparatus unit detachably mountable on the main assembly of image forming apparatus, and image-forming apparatus | Physics | 20 | Expired |
| US5354637A | Magnetic toner | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7361442B2 | Developing method and developing assembly | Physics | 17 | Active |
| US5998008A | Developer carrying member, comprising a coat layer containing a conductive particle and a nitrogen-containing heterocyclic compound developing apparatus, developing method, image forming apparatus, and process cartridge | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7361400B2 | Developer carrier, developing device using the developer carrier, and process cartridge using the developer carrier | Emerging Cross-Sectional Technologies | 15 | Active |
| US6873816B2 | Developing assembly, process cartridge and image-forming method | Physics | 15 | Expired |
| US6154625A | Developing apparatus, apparatus unit, and image forming method | Physics | 14 | Expired |
| US6391511B1 | Developing apparatus, apparatus unit, and image forming method | Physics | 12 | Expired |
| US5860050A | Developer carrying member, developing assembly, image forming apparatus, and process cartridge | Physics | 11 | Expired |
| US7086146B2 | Method of manufacturing a shielding base member | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6841327B2 | Developing assembly, image-forming apparatus and process cartridge | Physics | 10 | Expired |
| US6687476B2 | Developer-carrying member, method for regeneration thereof and developing apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US8059997B2 | Developer carrying member and developing apparatus | Physics | 9 | Active |
| US5176971A | Color filter | Physics | 9 | Expired |
| US5213933A | Positively chargeable magnetic toner, image forming process image forming apparatus, apparatus unit and facsimile apparatus | Physics | 8 | Expired |
| US8372570B2 | Developer carrying member, method for manufacturing same and developing apparatus | Chemistry; Metallurgy | 7 | Active |
| US8377549B2 | Developer carrying member, and developing apparatus using same | Emerging Cross-Sectional Technologies | 7 | Active |
| US6924076B2 | Developing assembly, process cartridge and image-forming method | Physics | 6 | Expired |
| US9026012B2 | Developer carrying member, process for its production, and developing assembly | Physics | 5 | Active |
| US8792810B2 | Developer carrying member, process for its production, and developing assembly | Physics | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.