Issued Patents All Time
Showing 26–50 of 105 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6252104 | Naphthol derivatives and process for producing the same | Shigeru Ito, Kenji Minami, Masaya Kitayama | 2001-06-26 |
| 6239263 | Water-soluble azo compounds and process for the preparation thereof | Masaya Kitayama, Kenji Minami, Masaharu Kittaka | 2001-05-29 |
| 6194608 | Process for separating and purifying alkali metal salts of hydroxynaphthalenecarboxylic acids | Masaya Kitayama, Kuniyo Yanagawase, Yoshiro Uchiyama, Shigeji Mori | 2001-02-27 |
| 6133475 | Process for producing 2-hydroxynaphthalene-3,6-dicarboxylic acid | Masaya Kitayama, Yoshiro Uchiyama, Syungo Nara | 2000-10-17 |
| 6084101 | Naphtol derivative and process for producing the same | Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori | 2000-07-04 |
| 6072042 | Bis(aminocarbonylnaphthol) derivative | Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori, Katsunori Tanikawa, Mariko Tanigawa | 2000-06-06 |
| 6020470 | Water-soluble azo compounds and process for producing the same | Masaya Kitayama, Kenji Minami, Masaharu Kittaka | 2000-02-01 |
| 6005085 | Condensed azo compounds and process for preparing the same | Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori, Katsunori Tanikawa | 1999-12-21 |
| 5973126 | Azo compounds and process for producing the same | Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori | 1999-10-26 |
| 5965715 | Bisazo compounds and process for the preparation thereof | Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori | 1999-10-12 |
| 5886034 | Prostaglandins E and anti ulcers containing same | Ryuji Ueno, Ichie Kato, Tomio Oda | 1999-03-23 |
| 5847233 | Naphthol derivatives and process for producing the same | Shigeru Ito, Kenji Minami, Masaya Kitayama | 1998-12-08 |
| 5786523 | Naphthol derivatives and process for producing the same | Shigeru Ito, Kenji Minami, Masaya Kitayama | 1998-07-28 |
| 5770766 | Method for separating and purifying hydroxynaphtalenecarboxylic acids | Masaya Kitayama, Kuniyo Yanagawase, Yoshiro Uchiyama, Shigeji Mori | 1998-06-23 |
| 5770759 | Prostaglandins of the F series | Ryuji Ueno, Tomio Oda | 1998-06-23 |
| 5591887 | Prostaglandins of the F series | Ryuji Ueno | 1997-01-07 |
| 5549919 | Preservation of foods by the combined action of a natural antimocrobial agent and separately packaged deoxidizing agent | Yatsuka Fujita, Yoshiaki Nagamura, Yuji Kamino, Akihiko Tabata | 1996-08-27 |
| 5534547 | Prostaglandins of the D series, and tranquilizers and soporifics containing the same | Ryuji Ueno, Ichie Kato, Tomio Oda | 1996-07-09 |
| 5428062 | Prostaglandins E and anti ulcers containing same | Ryuji Ueno, Ichie Kato, Tomio Oda | 1995-06-27 |
| 5380709 | Prostaglandins E and anti ulcers containing same | Ryuji Ueno, Ichie Kato, Tomio Oda | 1995-01-10 |
| 5362751 | Tracheobronchodilator using 16-substituted PGEs | Ryuji Ueno, Tomio Oda | 1994-11-08 |
| 5317032 | Prostaglandin cathartic | Ryuji Ueno, Sachiko Kuno, Tomio Oda | 1994-05-31 |
| 5304388 | Method for manufacturing powdery crystalline maltitol | Tomoe Kanno, Yuji Kunimi, Akihiko Tabata | 1994-04-19 |
| 5284858 | Prostaglandins E and anti ulcers containing same | Ryuji Ueno, Ichie Kato, Tomio Oda | 1994-02-08 |
| 5236617 | Oxygen absorbent | Akihiko Tabata | 1993-08-17 |