Issued Patents All Time
Showing 76–92 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6078292 | Small-sized wireless device | Yoshio Koyanagi, Koichi Ogawa | 2000-06-20 |
| 5986799 | Optical amplifier having an attenuator for attenuating input power to eliminate a surge in an amplified optical signal | Hiroyuki Itou | 1999-11-16 |
| 5975270 | Clutch disk of C/C composite for a wet friction clutch, and process for producing the same | Toshio Tokune, Tetsuo Naraki, Eiichiro Kawahara, Mitsumasa Furumoto, Takao Nakagawa +1 more | 1999-11-02 |
| 5940040 | System for selecting between a whip antenna and a built-in antenna | Yoshio Koyanagi | 1999-08-17 |
| 5902907 | Method for production of fluorenone | Yasuhisa Emoto | 1999-05-11 |
| 5892616 | Optical amplifier with reduced surge output | — | 1999-04-06 |
| 5847856 | Optical power monitor device, optical amplifier, and optical transmitter | Kazuto Imai | 1998-12-08 |
| 5841558 | Auxiliary-signal transmission system | Yuji Tamura, Hiroyuki Itou, Michikazu Shima, Yumiko Kawasaki, Kazuo Yamane | 1998-11-24 |
| 5798857 | Auxiliary-signal transmission system | Yuji Tamura, Hiroyuki Itou, Michikazu Shima, Yumiko Kawasaki, Kazuo Yamane | 1998-08-25 |
| 5680246 | Optical amplifier and optical transmission apparatus | Hiroyuki Itou, Yuji Tamura, Michikazu Shima, Kazuo Yamane, Yumiko Kawasaki +6 more | 1997-10-21 |
| 5663114 | Catalyst for production of pyromellitic anhydride and method for production of pyromellitic anhydride | Tatsuya Kawabata, Masaaki Okuno, Yasuhisa Emoto, Yasushi Kiyooka, Kenji Ueda | 1997-09-02 |
| 5625481 | Auxiliary-signal transmission system | Yuji Tamura, Hiroyuki Itou, Michikazu Shima, Yumiko Kawasaki, Kazuo Yamane | 1997-04-29 |
| 5577362 | Module construction method in a steel structure building zone | Kazukuni Yamashita, Shigetoshi Hikizi, Tamotsu Takano, Naomichi Ohama, Yoshiyuki Tanaka +3 more | 1996-11-26 |
| 5504218 | Method for production pyromellitic anhydride | Tatsuya Kawabata, Masaaki Okuno, Yasuhisa Emoto, Toshio Sagane, Kenji Ueda | 1996-04-02 |
| 5234870 | Zirconia sol and method for production thereof | Shigemi Osaka, Kazuo Hata, Teruyuki Moto | 1993-08-10 |
| 4927560 | Method for production of inorganic minute globular particles | Shigemi Osaka, Kazuo Hata | 1990-05-22 |
| 4192934 | Equipment for polymerization of vinyl chloride monomers and polymerization process using the same | Takeshi Sekihara, Tomoyuki Emura, Masayoshi MIKI | 1980-03-11 |