Issued Patents All Time
Showing 51–75 of 144 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5882778 | Hard coating of excellent wear resistance and hard coating coated member thereof | Yasuaki Sugizaki, Chunghsien Tsai, Tsutomu Ikeda, Yusuke Tanaka, Yasunori Wada +1 more | 1999-03-16 |
| 5656383 | Coated member having excellent hardness and, adhesive properties | Yusuke Tanaka, Taiitsu Aoki, Masahiro Machida, Takeo Komine, Yasushi Onishi | 1997-08-12 |
| 5580653 | Hard coating having excellent wear resistance properties, and hard coating coated member | Yusuke Tanaka, Yasushi Onishi | 1996-12-03 |
| 5270866 | Compact zoom lens | Kouji Oizumi, Keiji Ikemori, Yasuhisa Sato, Hiroki Nakayama, Takashi Matsushita | 1993-12-14 |
| 5235104 | Hydrazones and electrophotographic photoreceptors comprising them | Hiroyuki Akahori, Katashi Enomoto, Hisato Itoh, Tsutomu Nishizawa, Akihiro Yamaguchi | 1993-08-10 |
| 5214546 | Magnetic recording reproducer having a controller for detecting the tracking position of a head on a magnetic tape | — | 1993-05-25 |
| 5132190 | Hydrozones and electrophotographic photoreceptors comprising them | Hiroyuki Akahori, Katashi Enomoto, Hisato Itoh, Tsutomu Nishizawa, Akihiro Yamaguchi | 1992-07-21 |
| 5061562 | Method for preparing a magnetic recording medium and a magnetic disk using the same | Fusao Yamanaka, Makoto Nagao, Kazuhiko Morita | 1991-10-29 |
| 5055352 | Ferromagnetic thin film magnetic recording medium having an intermediate layer containing ultrafine particles and a polar group containing binder resin having a loss tangent peak temperature in a specified range | Hiroshi Hashimoto | 1991-10-08 |
| 5055937 | Remote controller for two VTR's | Tadashi Ueki | 1991-10-08 |
| 5051287 | Magnetic disk having a magnetic layer comprising a binder and ferromagnetic particles of specified crystallite size and surface area and in which the mechanical loss tangent, tan delta, is within a specified range | Mikihiko Kato, Yasuhi Endo, Masaya Kojima, Yasuo Nagashima | 1991-09-24 |
| 5045372 | Magnetic recording medium containing ferromagnetic metal powder and a specific fatty acid ester in a content dependent upon the specific surface area of the ferromagnetic metal powder | Yasushi Endo, Mikihiko Kato, Yasuo Nagashima | 1991-09-03 |
| 5034271 | Magnetic recording medium | Takahito Miyoshi, Hiroo Inaba, Kazuko Hanai | 1991-07-23 |
| 5023343 | P-amino substituted tetraphenylthiophenes and electrophotographic photoreceptors containing them | Eishi Tanaka, Tsutomu Nishizawa, Hisato Itoh, Akihiro Yamaguchi, Masakatsu Nakatsuka | 1991-06-11 |
| 4990393 | Printed circuit board | Norihiko Shibano | 1991-02-05 |
| 4963449 | P-amino substituted tetraphenylthiophenes and electrophotographic photoreceptors containing them | Eishi Tanaka, Tsutomu Nishizawa, Hisato Itoh, Akihiro Yamaguchi, Masakatsu Nakatsuka | 1990-10-16 |
| 4943479 | Magnetic recording medium | Matoko Nagao, Kazuhiko Morita | 1990-07-24 |
| 4937195 | Tissue culture of lichens | Yoshikazu Yamamoto, Ryuzo Mizuguchi | 1990-06-26 |
| 4871238 | Photographic optical device with variable magnification | Yasuhisa Sato, Hiroki Nakayama, Kouji Oizumi | 1989-10-03 |
| 4868060 | Magnetic recording medium | Katsumi Ryoke, Toshimitu Okutu, Masatoshi Takahashi | 1989-09-19 |
| 4862202 | Magnification change-over device for camera | Takayuki Tsuboi, Isao Nakazawa, Yoshihiro Harunari, Yasuhisa Sato | 1989-08-29 |
| 4842781 | Colored polarizing film and method of making same | Tsutomu Nishizawa, Junichi Fujio, Shin Hosonuma | 1989-06-27 |
| 4842395 | Finder of variable magnification | Yasuhisa Sato, Nozomu Kitagishi, Hiroki Nakayama, Kouji Oizumi | 1989-06-27 |
| 4840466 | Changeable magnification optical system | Isao Nakazawa | 1989-06-20 |
| 4840842 | Abrasive tape | Nobutaka Yamaguchi, Masaaki Fujiyama, Masami Suzuki | 1989-06-20 |