Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5719455 | Method of designing a superconductivity employing apparatus and a superconductivity employing apparatus constructed by the method | Fumihiko Ishikawa, Masanori Yamashita, Makoto Hirose | 1998-02-17 |
| 5646811 | Reverse-charge prevention apparatus | Fumihiko Ishikawa | 1997-07-08 |
| 5525849 | Superconducting bearing | Norio Ito, Tatsuya Shimoda, Hiroshi Imaizumi, Fumihiko Ishikawa | 1996-06-11 |
| 5465806 | Electric vehicle | Fumihiko Ishikawa, Shigenori Matsumura, Hidetoshi Nasu, Kazunobu Sato | 1995-11-14 |
| 5313130 | Superconduction bearing | Motoaki Shibayama, Takenori Tada, Terutsugu Oyama, Fumihiko Ishikawa | 1994-05-17 |
| 5222568 | Electric vehicle | Fumihiko Ishikawa, Shigenori Matsumura, Hidetoshi Nasu, Kazunobu Sato | 1993-06-29 |
| 5162964 | Connection control device for controlling the connection of small generator unit to electric power system | Fumihiko Ishikawa, Shigenori Matsumura, Soichi Yamanaka | 1992-11-10 |
| 5111377 | Interconnection for electric power system | Fumihiko Ishikawa, Shigenori Matsumura, Sueo Sakata, Masayoshi Kumano | 1992-05-05 |
| 5099145 | System disconnection detection circuit for a distributed location power source | Fumihiko Ishikawa, Shigenori Matsumura, Takeshi Takemura, Toshihisa Shimizu | 1992-03-24 |