Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385602 | Hydrogen power system | Yoshifumi Kawakami, Ryosuke Yamamoto, Tomohiro Nakano | 2025-08-12 |
| 12055092 | Hydrogen supply device and hydrogen engine vehicle | Ryosuke Yamamoto, Tomohiro Nakano, Yoshifumi Kawakami | 2024-08-06 |
| 6405563 | Opaque silica glass article having transparent portion and process for producing same | Masayuki Kudo, Koji Tsukuma, Yoshikazu Kikuchi, Tomoyuki Akiyama | 2002-06-18 |
| 6312775 | Opaque silica glass article having transparent portion and process for producing same | Masayuki Kudo, Koji Tsukuma | 2001-11-06 |
| 5972488 | Opaque quartz glass and process for production thereof | Koji Tsukuma, Masayuki Kudo | 1999-10-26 |
| 5585173 | High-purity, opaque quartz glass, method for producing same and use thereof | Kenji Kamo, Kouichi Ono, Koji Tsukuma, Emiko Abe, Yoshikazu Kikuchi +1 more | 1996-12-17 |
| 5088003 | Laminated silicon oxide film capacitors and method for their production | Naomichi Sakai, Masanaga Kikusawa, Yoshitaka Kubota, Hiroshi Yamamura | 1992-02-11 |
| 4933155 | Method of producing powder of lithium zirconate | Hiroshi Yamamura | 1990-06-12 |
| 4862029 | Actuator | Kiyoshi Kasai, Naomichi Sakai, Tomoyuki Oikawa, Kenji Uchino, Takaaki Tsukidate +2 more | 1989-08-29 |