Shinichi Kawamura
99Patents
23h-index
111Co-inventors
91Inventor score
Filing activity: Mar 6, 1985 → Mar 18, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7277540B1 | Arithmetic method and apparatus and crypto processing apparatus for performing multiple types of cryptography | Physics | 69 | Expired |
| US6210848A | Electrophotographic photoconductor, and process cartridge and image forming apparatus using the same | Physics | 53 | Expired |
| US5136642A | Cryptographic communication method and cryptographic communication device | Electricity | 53 | Expired |
| US6066428A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chemistry; Metallurgy | 51 | Expired |
| US6444387B2 | Image bearing material, electrophotographic photoreceptor using the image bearing material, and image forming apparatus using the photoreceptor | Physics | 50 | Expired |
| US6492079B2 | Electrophotographic photoconductor, image forming apparatus, and process cartridge using the photoconductor | Physics | 48 | Expired |
| US6187492A | Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductor | Chemistry; Metallurgy | 48 | Expired |
| US5858807A | Method of manufacturing liquid crystal display device | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6096585A | Method of manufacturing thin film transistor | Physics | 39 | 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 |
| US6194535A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chemistry; Metallurgy | 38 | Expired |
| US5046094A | Server-aided computation method and distributed information processing unit | Electricity | 37 | Expired |
| US5976746A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 37 | Expired |
| US6187494A | Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductor | Physics | 35 | Expired |
| US6842523B1 | Encryption apparatus, cryptographic communication system, key recovery system, and storage medium | Electricity | 31 | Expired |
| US7194090B2 | Encryption apparatus, decryption apparatus, expanded key generating apparatus and method therefor, and recording medium | Electricity | 31 | Expired |
| US5773844A | Method of forming a polycrystalline silicon layer, a thin film transistor having the polycrystalline silicon layer, method of manufacturing the same, and a liquid crystal display device having the thin film transistor | Electricity | 30 | Expired |
| US6940975B1 | Encryption/decryption apparatus, encryption/decryption method, and program storage medium therefor | Electricity | 25 | Expired |
| US6891950B1 | Extended key generator, encryption/decryption unit, extended key generation method, and storage medium | Electricity | 25 | Expired |
| US6172176A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 25 | Expired |
| US7166689B2 | Aryl amine polymer, thin film transistor using the aryl amine polymer, and method of manufacturing the thin film transistor | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6045959A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 24 | Expired |
| US6596449B2 | Electrophotographic photoreceptor, and process cartridge and electrophotographic image forming apparatus using the electrophotographic photoreceptor | Physics | 23 | Expired |
| US6576386B1 | AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE | Physics | 19 | Expired |
| US6664361B2 | Diphenol compound, aromatic polycarbonate and electrophotoconductive photoconductor | Chemistry; Metallurgy | 19 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.