Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5793039 | Mass spectrometer, skimmer cone assembly, skimmer cone and its manufacturing method | Masamichi Tsukada, Toyoharu Okumoto, Takashi Iino | 1998-08-11 |
| 5763877 | Analyzer using plasma and analysis method using plasma, interface used for the same and sample introducing component used for the same | Masamichi Tsukada, Toyoharu Okumoto, Takashi Iino | 1998-06-09 |
| 5616918 | Plasma ion mass spectrometer and plasma mass spectrometry using the same | Toyoharu Okumoto, Masamichi Tsukada, Takashi Iino | 1997-04-01 |
| 5308977 | Plasma mass spectrometer | Masataka Koga, Hiromi Yamashita, Takashi Iino, Toyoharu Okumoto, Tsuyoshi Nishitarumizu | 1994-05-03 |
| 5283624 | Multi-element simultaneous analysis atomic absorption spectroscopy photometer and multi-element simultaneous analytic method | Masamichi Tsukada | 1994-02-01 |
| 5148021 | Mass spectrometer using plasma ion source | Yukio Okamoto, Satoshi Shimura, Masataka Koga, Makoto Yasuda, Takahashi Iino | 1992-09-15 |
| 5108178 | Atomic absorption spectrophotometer and electromagnetic shut-off valve for use therein | Katsuhito Harada, Masamichi Tsukada, Kazuo Moriya, Toyoharu Okumoto | 1992-04-28 |
| 5104220 | Atomic absorption spectrophotometer and analyzing method | Toyoharu Okumoto, Katsuhito Harada | 1992-04-14 |
| 4948250 | Atomic absorption spectrophotometer | Hideaki Koizumi, Masataka Koga | 1990-08-14 |
| 4890919 | Atomic absorption spectrophotometer | Masamichi Tsukada, Katsuhito Harada, Toyoharu Okumoto | 1990-01-02 |
| 4867562 | Atomic absorption spectrophotometer | Masamichi Tsukada, Masatoshi Kitagawa, Toyoharu Okumoto, Hayato Tobe | 1989-09-19 |
| 4840484 | Atomic absorption spectrophotometer with furnace at pressure equal or near light source pressure | Toyoharu Okumoto, Hayato Tobe, Masamichi Tsukada | 1989-06-20 |
| 4728189 | Atomic absorption spectrophotometer | Koichi Uchino, Hideo Yamada, Seigo Kamitake, Masao Hashimoto | 1988-03-01 |
| 4645341 | Double polarized light beam spectrophotometer of light source modulation type | Masataka Koga, Masatoshi Kitagawa | 1987-02-24 |
| 4468121 | Spectrophotometric analyzer having dual monochromators | Hideaki Koizumi | 1984-08-28 |
| 4198589 | Spectral source, particularly for atomic absorption spectrometry | Shinji Mayama, Masataka Koga, Yoji Arai | 1980-04-15 |