Issued Patents All Time
Showing 101–125 of 172 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6899452 | Apparatus and method for preparation and supply of polymerization inhibitor | Kei Hamamoto, Kazuhiko Sakamoto, Kunihiko Suzuki | 2005-05-31 |
| 6891061 | Packed column and polymerizable compound treating method using the same | Yukihiro Matsumoto, Sei Nakahara, Osamu Dodo | 2005-05-10 |
| 6888025 | Method for absorbing acrylic acid and method for purifying acrylic acid | Harunori Hirao, Yoshitake Ishii, Yukihiro Matsumoto | 2005-05-03 |
| 6878239 | Process for inhibiting a polymerization in a vacuum section of an easily polymerizable compound purification system | Yukihiro Matsumoto | 2005-04-12 |
| 6848501 | Method for preventing plate type heat exchanger from blockage | Harunori Hirao, Yukihiro Matsumoto, Sei Nakahara, Osamu Dodo, Tetsuji Mitsumoto +2 more | 2005-02-01 |
| 6831195 | Method for production of organic acid | Tetsuji Mitsumoto, Kazuhiko Sakamoto, Hidefumi Haramaki | 2004-12-14 |
| 6755943 | Perforated tray without downcomer, perforated tray tower without downcomer | Noriaki Mizutani, Yukihiro Matsumoto | 2004-06-29 |
| 6713648 | Method for absorbing acrylic acid and method for purifying acrylic acid | Harunori Hirao, Yoshitake Ishii, Yukihiro Matsumoto | 2004-03-30 |
| 6695928 | Method for production of (meth) acrylic acid and/or (meth)acrylic esters | Sei Nakahara, Masatoshi Ueoka | 2004-02-24 |
| 6677482 | Method of manufacturing (meth) acrylic acid | Yukihiro Matsumoto | 2004-01-13 |
| 6667419 | Method for absorption of acrylic compound and apparatus therefor | Yukihiro Matsumoto, Misao Inada, Kazuhiko Sakamoto | 2003-12-23 |
| 6666956 | Method for distilling polymerizable compound or liquid containing polymerizable compound | Yukihiro Matsumoto | 2003-12-23 |
| 6661584 | Zoom lens and camera having the zoom lens | — | 2003-12-09 |
| 6657791 | Zoom lens and optical apparatus having the same | — | 2003-12-02 |
| 6657079 | Method for mixing gases and apparatus therefor | Tetsuji Mitsumoto, Tatsuaki Yoshimura, Sei Nakahara | 2003-12-02 |
| 6653572 | Multilayer circuit board | Masayuki Ishiwa, Kenji Iizuka | 2003-11-25 |
| 6651731 | Method for cooling heating grade heat exchanger in unsteady state | Yukihiro Matsumoto, Sei Nakahara, Motomi Nakamura | 2003-11-25 |
| 6641700 | Purifying apparatus possessing vapor dispersing device | Hajime Matsumoto, Yukihiro Matsumoto | 2003-11-04 |
| 6638432 | Method of treating waste liquid | Yukihiro Matsumoto, Kazuto OKAZAKI, Kiyotaka Watanabe | 2003-10-28 |
| 6635148 | Method for refining easily polymerizable matter-contained substance and apparatus therefor | Yukihiro Matsumoto | 2003-10-21 |
| 6627047 | Method for preventing polymerization in thin-film type evaporating device | Yuichi Ijiri, Yukihiro Matsumoto | 2003-09-30 |
| 6620969 | Shell-and-tube heat exchanger and method for inhibiting polymerization in the shell-and-tube heat exchanger | Yukihiro Matsumoto | 2003-09-16 |
| 6615230 | Data access right management apparatus in a data-independent computer system | — | 2003-09-02 |
| 6613940 | Method for catalytic gas phase oxidation | Masakatsu Mori, Masatsugu Kitaura, Osamu Dodo, Daisuke Nakamura | 2003-09-02 |
| 6607405 | Multi-card card connector for multi-type cards | — | 2003-08-19 |