Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7531691 | Method for producing naphthalene carboxylic acid amide compound | Nobuhiro Yonetani | 2009-05-12 |
| 7449608 | Naphthol derivative and charge control agent comprising the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Nobuhiro Yonetani | 2008-11-11 |
| 7355071 | Method for preparing 2,6-naphthalene dicarboxylic acid | Masaya Kitayama | 2008-04-08 |
| 7169523 | Charge controllers | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Nobuhiro Yonetani | 2007-01-30 |
| 7074536 | Alkylenebisnaphtol derivative and charge control agent which consists of the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Nobuhiro Yonetani | 2006-07-11 |
| 7030261 | Method for preparing 2-hydroxy-6-ureidocarbonyl naphthalene derivative | Masaya Kitayama, Nobuhiro Yonetani | 2006-04-18 |
| 6891072 | Process for production of dimers or aromatic monohydroxyl compounds | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Hikari Hirai | 2005-05-10 |
| 6849742 | Binaphthol derivative and process for producing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2005-02-01 |
| 6639092 | Metal salt of binaphthol derivative and method for preparing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2003-10-28 |
| 6451988 | Naphthol derivatives | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2002-09-17 |
| 6409812 | AZO compounds and process for producing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2002-06-25 |
| 6284924 | Compounds | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Naoko Mori | 2001-09-04 |
| 6084101 | Naphtol derivative and process for producing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 2000-07-04 |
| 6072042 | Bis(aminocarbonylnaphthol) derivative | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Katsunori Tanikawa, Mariko Tanigawa | 2000-06-06 |
| 6005085 | Condensed azo compounds and process for preparing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Katsunori Tanikawa | 1999-12-21 |
| 5973126 | Azo compounds and process for producing the same | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 1999-10-26 |
| 5965715 | Bisazo compounds and process for the preparation thereof | Ryuzo Ueno, Masaya Kitayama, Kenji Minami | 1999-10-12 |