Tomoyuki Shimada
135Patents
22h-index
80Co-inventors
93Inventor score
Filing activity: May 13, 1987 → Jan 8, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5153073A | Electroluminescent device | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5789128A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 50 | Expired |
| US5942363A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 49 | Expired |
| US6492079B2 | Electrophotographic photoconductor, image forming apparatus, and process cartridge using the photoconductor | Physics | 48 | Expired |
| US5846680A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 47 | Expired |
| US4957838A | Electrophotographic photoconductor and triphenylamine compounds for use in the same | Physics | 44 | Expired |
| US6191249A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 41 | Expired |
| US5853935A | Electrophotographic photoconductor | Physics | 41 | Expired |
| US5840454A | Aromatic polycarbonate and electrophotographic photosensitive medium using same | Physics | 40 | Expired |
| US5723243A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 40 | Expired |
| US6548216B2 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD AND APPARATUS, AND PROCESS CARTRIDGE USING THE PHOTOCONDUCTOR, AND LONG-CHAIN ALKYL GROUP CONTAINING BISPHENOL COMPOUND AND POLYMER MADE THEREFROM | Physics | 38 | Expired |
| US5910561A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 37 | Expired |
| US6861188B2 | Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptor | Physics | 37 | Expired |
| US5747204A | Electrophotographic photoconductor and aromatic polycarbonate resin for use in the same | Physics | 36 | Expired |
| US6069224A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 34 | Expired |
| US6027846A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 31 | Expired |
| US6093784A | Electrophotographic photoconductor and polycarbonate resin for use therein | Physics | 25 | Expired |
| US6544701B2 | REACTION PRODUCT, PROCESS FOR THE PRODUCTION THEREOF, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR USING THE REACTION PRODUCT, ELECTROPHOTOGRAPHIC APPARATUS USING THE PHOTOCONDUCTOR, AND PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC APPARATUS | Physics | 25 | Expired |
| US7018755B2 | Electrophotographic photoconductor, electrophotography method using the same, electrophotographic apparatus, electrographic apparatus process cartridge and electrophotographic photoconductor outermost surface layer coating solution | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6018014A | Aromatic polycarbonate and electrophotographic photosensitive medium using same | Physics | 24 | Expired |
| US6465648B1 | REACTION PRODUCT, PROCESS OF PRODUCING SAME, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR USING SAME, ELECTROPHOTOGRAPHIC APPARATUS HAVING THE PHOTOCONDUCTOR, AND PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC APPARATUS | Physics | 24 | Expired |
| US6596449B2 | Electrophotographic photoreceptor, and process cartridge and electrophotographic image forming apparatus using the electrophotographic photoreceptor | Physics | 23 | Expired |
| US5344985A | Aldehyde intermediates for the preparation of pyrenylamine derivatives having unsaturated bond | Chemistry; Metallurgy | 21 | Expired |
| US5457232A | Pyrenylamine derivatives having unsaturated bond | Chemistry; Metallurgy | 20 | Expired |
| US5370954A | Photoconductive composition containing trisazo and disazo compounds | Physics | 19 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.