Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8436295 | Device for measuring mean free path, vacuum gauge, and method for measuring mean free path | Megumi Nakamura, Qiang Peng | 2013-05-07 |
| 8410415 | Ion detector for mass spectrometry, method for detecting ion, and method for manufacturing ion detector | Megumi Nakamura, Qiang Peng | 2013-04-02 |
| 8324568 | Mass spectrometer and mass spectrometry method | Yoshiki Hirano, Megumi Nakamura, Yasuyuki Taneda, Qiang Peng, Harumi Maruyama | 2012-12-04 |
| 8309917 | Mass spectrometry and mass spectrometer used for the same | Harumi Maruyama, Yasuyuki Taneda, Megumi Nakamura | 2012-11-13 |
| 8164051 | Internal standard material, resin composition, and measurement method | Harumi Maruyama, Megumi Nakamura | 2012-04-24 |
| 8049166 | Mass spectrometer system and mass spectrometry method | Megumi Nakamura, Harumi Maruyama | 2011-11-01 |
| 7952069 | Mass spectrometer and mass spectrometry method | Megumi Nakamura, Harumi Maruyama, Aiko Wada | 2011-05-31 |
| 7842919 | Q-pole type mass spectrometer | — | 2010-11-30 |
| 7202474 | Ion attachment mass spectrometry apparatus | Yoshiki Hirano, Harumi Maruyama, Megumi Nakamura | 2007-04-10 |
| 7164121 | Ion attachment mass spectrometry method | Yoshiki Hirano | 2007-01-16 |
| 7084397 | Ion attachment mass spectrometry apparatus | Yoshiki Hirano, Harumi Maruyama, Megumi Nakamura | 2006-08-01 |
| 7015461 | Method and apparatus for ion attachment mass spectrometry | Megumi Nakamura, Tohru Sasaki, Toshihiro Fujii | 2006-03-21 |
| 7005634 | Ionization apparatus | Megumi Nakamura, Tohru Sasaki, Toshihiro Fujii | 2006-02-28 |
| 6800848 | Method and apparatus for ion attachment mass spectrometry | Megumi Nakamura, Tohru Sasaki, Toshihiro Fujii | 2004-10-05 |
| 6800850 | Reflection type ion attachment mass spectrometry apparatus | Yoshiki Hirano | 2004-10-05 |
| 6768108 | Ion attachment mass spectrometry apparatus, ionization apparatus, and ionization method | Yoshiki Hirano, Toshihiro Fujii, Munetaka Nakata, Masao Takayanagi | 2004-07-27 |
| 6635868 | Mass spectrometry apparatus | Megumi Nakamura, Toshihiro Fujii | 2003-10-21 |
| 6590205 | Ionization method for mass spectrometry and mass spectrometry apparatus | Megumi Nakamura, Tohru Sasaki, Toshihiro Fujii | 2003-07-08 |
| 6559443 | Ionization apparatus and ionization method for mass spectrometry | Megumi Nakamura, Yoshiki Hirano, Toshihiro Fujii | 2003-05-06 |
| 6507020 | Halide compound mass spectrometry method and mass spectrometry apparatus | Toshihiro Fujii | 2003-01-14 |
| 6479814 | Ion source for ion attachment mass spectrometry apparatus | Megumi Nakamura, Toshihiro Fujii | 2002-11-12 |
| 6399213 | Surface treated vacuum material and a vacuum chamber having an interior surface comprising same | — | 2002-06-04 |
| 6316052 | Method for the surface treatment of vacuum materials and surface treated vacuum | — | 2001-11-13 |
| 5916388 | Method and apparatus for the treatment of stainless steel surfaces | — | 1999-06-29 |
| 4785173 | Element analyzing apparatus | — | 1988-11-15 |