Issued Patents All Time
Showing 25 most recent of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12215825 | High-pressure hydrogen apparatus gas seal member and high-pressure hydrogen apparatus | Yoshihisa Takeyama | 2025-02-04 |
| 11649387 | Gas seal member for high-pressure hydrogen device, and high-pressure hydrogen device | Yoshihisa Takeyama | 2023-05-16 |
| 11448319 | Composition for gas seal member and method of producing same, gas seal member for high-pressure hydrogen device, and high-pressure hydrogen device | Yoshihisa Takeyama | 2022-09-20 |
| 7923580 | Polymerizable boric compounds, methods of producing the same, polymerizable compositions and ionic-conductive polymeric electrolytes | Norio Iwayasu, Takefumi Okumura, Tetsuya Itoh, Takeshi Yabe | 2011-04-12 |
| 7759003 | Polymerizable boric compounds, methods of producing the same, polymerizable compositions and ionic-conductive polymeric electrolytes | Norio Iwayasu, Takefumi Okumura, Tetsuya Itoh, Takeshi Yabe | 2010-07-20 |
| 7704642 | Cationic conductor, its intermediate, and lithium secondary battery using the conductor | Akira Satou, Takefumi Okumura, Makoto Morishima, Hitoshi Yamamoto, Norikazu Ueyama | 2010-04-27 |
| 7473492 | Lithium secondary battery | Takefumi Okumura, Norio Iwayasu, Shoichi Yokoyama, Takeshi Yabe | 2009-01-06 |
| 7300991 | Cationic conductor, its intermediate, and lithium secondary battery using the conductor | Akira Satou, Takefumi Okumura, Makoto Morishima, Hitoshi Yamamoto, Norikazu Ueyama | 2007-11-27 |
| 7292785 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2007-11-06 |
| 7273677 | Cationic conductor | Akira Satou | 2007-09-25 |
| 7230057 | Boron-containing compound, ion-conductive polymer and polyelectrolyte for electrochemical devices | Takefumi Okumura, Norio Iwayasu, Shoichi Yokoyama, Takeshi Yabe | 2007-06-12 |
| 7167652 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2007-01-23 |
| 7125629 | Cationic conductor | Akira Satou | 2006-10-24 |
| 6728489 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2004-04-27 |
| 6462148 | Adhesive film of quinoline polymer and bismaleimide | Masahiro Suzuki, Masao Suzuki, Akio Takahashi, Akira Kageyama, Yoshihiko Honda +3 more | 2002-10-08 |
| 6266169 | Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2001-07-24 |
| 6018405 | Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2000-01-25 |
| 6005699 | Optical wavelength multiplexing system | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1999-12-21 |
| 5875046 | Optical repeater and optical transmitter | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1999-02-23 |
| 5861972 | Optical multiplex transmission equipment and method | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1999-01-19 |
| 5812289 | Optical repeater and optical transmitter | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1998-09-22 |
| 5739932 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1998-04-14 |
| 5686191 | Thin film wiring board | Takao Miwa, Masahiro Suzuki, Akio Takahashi, Yoshiaki Okabe, Yuichi Satsu | 1997-11-11 |
| 5671074 | Optical multiplex transmission equipment and method | Keiji Tomooka, Naohiro Sakakida, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1997-09-23 |
| 5565536 | Polymerizable compouund, process for producing same and setting composition containing polymerizable compound | Yoshinori Kawai, Satoru Amou, Akira Nagai, Masahiro Suzuki, Akio Takahashi +1 more | 1996-10-15 |