Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8324568 | Mass spectrometer and mass spectrometry method | Yoshiro Shiokawa, Megumi Nakamura, Yasuyuki Taneda, Qiang Peng, Harumi Maruyama | 2012-12-04 |
| 7202474 | Ion attachment mass spectrometry apparatus | Yoshiro Shiokawa, Harumi Maruyama, Megumi Nakamura | 2007-04-10 |
| 7164121 | Ion attachment mass spectrometry method | Yoshiro Shiokawa | 2007-01-16 |
| 7084397 | Ion attachment mass spectrometry apparatus | Yoshiro Shiokawa, Harumi Maruyama, Megumi Nakamura | 2006-08-01 |
| 6800850 | Reflection type ion attachment mass spectrometry apparatus | Yoshiro Shiokawa | 2004-10-05 |
| 6768108 | Ion attachment mass spectrometry apparatus, ionization apparatus, and ionization method | Yoshiro Shiokawa, Toshihiro Fujii, Munetaka Nakata, Masao Takayanagi | 2004-07-27 |
| 6559443 | Ionization apparatus and ionization method for mass spectrometry | Yoshiro Shiokawa, Megumi Nakamura, Toshihiro Fujii | 2003-05-06 |
| 6018134 | Main circuit switching apparatus | Naoyuki Nakatsukasa, Daisuke Yoshida, Kouichirou Wada, Mikio Mori, Masashi Matsuki | 2000-01-25 |
| 5514844 | Switch | Suenobu Hamano, Hiroyuki Sasao, Katsuhiko Horinouchi, Mikio Hidaka, Haruhiko Kohyama | 1996-05-07 |
| 5367134 | Circuit breaker | Toshiaki Yoshizumi, Mikio Hidaka | 1994-11-22 |
| 5353594 | Driving mechanism of a circuit breaker | Toru Yamashita | 1994-10-11 |
| 5354959 | Circuit breaker | Toshiaki Yoshizumi, Mikio Hidaka | 1994-10-11 |