Issued Patents All Time
Showing 26–50 of 99 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7277540 | Arithmetic method and apparatus and crypto processing apparatus for performing multiple types of cryptography | Masue Shiba | 2007-10-02 |
| 7266577 | Modular multiplication apparatus, modular multiplication method, and modular exponentiation apparatus | Hanae Ikeda, Kenji Kojima | 2007-09-04 |
| 7227948 | Encryption apparatus and method, and decryption apparatus and method based on block encryption | Kenji Ohkuma, Hirofumi Muratani, Fumihiko Sano | 2007-06-05 |
| 7209556 | Encryption apparatus and method, and decryption apparatus and method based on block encryption | Kenji Ohkuma, Hirofumi Muratani, Fumihiko Sano | 2007-04-24 |
| 7194090 | Encryption apparatus, decryption apparatus, expanded key generating apparatus and method therefor, and recording medium | Hirofumi Muratani, Masahiko Motoyama, Kenji Ohkuma, Fumihiko Sano | 2007-03-20 |
| 7173681 | Two pixel electrodes interposing the signal line extending into without extending beyond the recess on the protection film caused by the contact hole | Hideyuki Takahashi, Kohei Nagayama, Mamoru Furuta, Toshihiro Ninomiya, Koji Soma | 2007-02-06 |
| 7166689 | Aryl amine polymer, thin film transistor using the aryl amine polymer, and method of manufacturing the thin film transistor | Toshiya Sagisaka, Masaomi Sasaki, Masafumi Torii, Takashi Okada, Yoshinobu Nakayama +4 more | 2007-01-23 |
| 7122284 | 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 | Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka, Michihiko Namba | 2006-10-17 |
| 7071285 | Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus | Masaomi Sasaki, Kazukiyo Nagai, Kohkoku Ri, Susumu Suzuka, Katsuhiro Morooka | 2006-07-04 |
| 7056633 | Electrophotographic photoconductor, image forming method and apparatus, and process cartidge using the photocondutor, and long-chain alkyl group containing bisphenol compound and polymer made therefrom | Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka, Michihiko Namba | 2006-06-06 |
| 7039184 | Encryption/decryption unit and storage medium | Fumihiko Sano, Hideo Shimizu | 2006-05-02 |
| 6985582 | Encryption/decryption unit and storage medium | Fumihiko Sano, Hideo Shimizu | 2006-01-10 |
| 6974654 | 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 | Kazukiyo Nagai, Tomoyuki Shimada, Chiaki Tanaka, Michihiko Namba | 2005-12-13 |
| 6939651 | Electrophotographic photoconductor, and process cartridge and electrophotographic apparatus using the same | Hongguo Li, Kazukiyo Nagai, Masaomi Sasaki, Yasuo Suzuki, Nozomu Tamoto +1 more | 2005-09-06 |
| 6940975 | Encryption/decryption apparatus, encryption/decryption method, and program storage medium therefor | Fumihiko Sano | 2005-09-06 |
| 6919419 | AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTRO-PHOTOGRAPHIC PHOTOCONDUCTOR, ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE | Kohkoku Ri, Masaomi Sasaki, Kazukiyo Nagai, Susumu Suzuka, Katsuhiro Morooka | 2005-07-19 |
| 6891950 | Extended key generator, encryption/decryption unit, extended key generation method, and storage medium | Motoji Oomori, Kaoru Yokota, Tsutomu Sekibe, Makoto Tatebayashi, Fumihiko Sano | 2005-05-10 |
| 6869913 | Pyridazin-3-one derivatives, their use and intermediates for their production | Tadashi Katayama, Yuzuru Sanemitsu, Yoko Mine | 2005-03-22 |
| 6842523 | Encryption apparatus, cryptographic communication system, key recovery system, and storage medium | Akito Niwa, Megumi Aoki, Toshiaki Saisho, Tatsuya Ishihara, Fumihiko Sano +1 more | 2005-01-11 |
| 6807555 | Modular arithmetic apparatus and method having high-speed base conversion function | — | 2004-10-19 |
| 6790571 | Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus | Masaomi Sasaki, Kazukiyo Nagai, Kohkoku Ri, Susumu Suzuka, Katsuhiro Morooka | 2004-09-14 |
| 6730368 | Method of preparing a poly-crystalline silicon film | — | 2004-05-04 |
| 6703503 | Pyridazin-3-one derivatives, their use, and intermediates for their production | Tadashi Katayama, Yuzuru Sanemitsu, Yoko Mine | 2004-03-09 |
| 6670641 | Thin film transistor, method of manufacturing the same and thin film transistor liquid crystal display device | Kaichi FUKUDA, Tsutomu Uemoto, Hideo Hirayama, Shigetaka Toriyama | 2003-12-30 |
| 6664361 | Diphenol compound, aromatic polycarbonate and electrophotoconductive photoconductor | Masaomi Sasaki, Kazukiyo Nagai, Kohkoku Ri, Katsuhiro Morooka, Susumu Suzuka | 2003-12-16 |