Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7161141 | Ion trap/time-of-flight mass spectrometer and method of measuring ion accurate mass | Yoshiaki Kato, Toyoharu Okumoto | 2007-01-09 |
| 6977373 | Ion trap mass analyzing apparatus | Kiyomi Yoshinari, Yoshiaki Kato, Masaru Tomioka | 2005-12-20 |
| 6759652 | Ion trap mass analyzing apparatus | Kiyomi Yoshinari, Yoshiaki Kato, Masaru Tomioka | 2004-07-06 |
| 6683303 | Ion trap mass spectrometer and spectrometry | Kiyomi Yoshinari, Yoshiaki Kato, Shinji Nagai | 2004-01-27 |
| 6339218 | Method and apparatus for direct coupling of liquid chromatograph and mass spectrometer, liquid chromatography—mass spectrometry, and liquid chromatograph mass spectrometer | Yoshiaki Kato | 2002-01-15 |
| 6236042 | Method and apparatus for direct coupling of liquid chromatograph and mass spectrometer, liquid chromatography-mass spectrometry, and liquid chromatograph-mass spectrometer | Yoshiaki Kato | 2001-05-22 |
| 6157030 | Ion trap mass spectrometer | Minoru Sakairi, Toshihiro Ishizuka, Masaru Tomioka, Yasuaki Takada, Takayuki Nabeshima | 2000-12-05 |
| 6005245 | Method and apparatus for ionizing a sample under atmospheric pressure and selectively introducing ions into a mass analysis region | Minoru Sakairi, Yasuaki Takada, Takayuki Nabeshima, Hideaki Koizumi | 1999-12-21 |
| 5986260 | Mass analyzer | Mitsuru Oonuma, Seiji Kamimura | 1999-11-16 |
| 5859432 | Method and apparatus for direct coupling of liquid chromatograph and mass spectrometer liquid, chromatography--mass spectrometry, and liquid chromatograph--mass spectrometer | Yoshiaki Kato | 1999-01-12 |
| 5789746 | Liquid chromatograph mass spectrometry and liquid chromatograph mass spectrometer | Yoshiaki Kato | 1998-08-04 |
| 5789747 | Three dimensional quadrupole mass spectrometry and mass spectrometer | Yoshiaki Kato | 1998-08-04 |
| 5668370 | Automatic ionization mass spectrometer with a plurality of atmospheric ionization sources | Masayoshi Yano, Yoshiaki Kato | 1997-09-16 |
| 5663560 | Method and apparatus for mass analysis of solution sample | Minoru Sakairi, Yasuaki Takada, Takayuki Nabeshima, Hideaki Koizumi | 1997-09-02 |
| 5633496 | Mass spectrometry apparatus | Minoru Sakairi, Yoichi Ose, Atsumu Hirabayashi, Yasuaki Takada | 1997-05-27 |
| 5612534 | Atmospheric pressure ionization mass spectrometer | Masayoshi Yano | 1997-03-18 |
| 5581081 | Method and apparatus for direct coupling of liquid chromatograph and mass spectrometer, liquid chromatograph-mass spectrometry, and liquid chromatograph mass spectrometer | Yoshiaki Kato | 1996-12-03 |
| 5567938 | Mass spectrometer | Yoshiaki Kato, Kazumi Matsumura | 1996-10-22 |
| 5532483 | Mass spectrometer and ion source | Yoichi Ose, Kiyomi Yoshinari, Masayoshi Yano | 1996-07-02 |
| 5422482 | Mass spectrometric apparatus | Fumihiko Nakajima | 1995-06-06 |
| D347396 | Mass spectrometer combined with liquid chromatograph | Mitsuru Ohnuma, Tomoyuki Miyata, Kazunori Hashimoto, Yoshiaki Kato | 1994-05-31 |
| 5298744 | Mass spectrometer | Yoshiaki Kato, Kazumi Matsumura | 1994-03-29 |
| 5240616 | Liquid chromatograph-direct coupled mass spectrometer | Yoshiaki Kato | 1993-08-31 |
| 5051583 | Atmospheric pressure ionization type mass spectrometer | Fumihiko Nakajima | 1991-09-24 |
| 4996424 | Atmospheric pressure ionization mass spectrometer | Yoshiaki Kato | 1991-02-26 |