Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7608371 | Method of modifying liquid crystal polymers | Ryuzo Ueno, Kunikazu Asaka, Kazuyuki Hirao, Shingo KANEHIRA | 2009-10-27 |
| 7449608 | Naphthol derivative and charge control agent comprising the same | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori, Nobuhiro Yonetani | 2008-11-11 |
| 7355071 | Method for preparing 2,6-naphthalene dicarboxylic acid | Hiroyuki Wakamori | 2008-04-08 |
| 7304182 | Crystalline parahydroxybenzoic acid anhydride and process for preparing the same | Ryuzo Ueno, Nobutaka Izumichi, Masaharu Kittaka | 2007-12-04 |
| 7238769 | Method for joining liquid-crystalline polyester resin composition parts and jointed article made of liquid-crystalline polyester resin composition | Naoshi Saito | 2007-07-03 |
| 7179401 | Thermotropic liquid-crystalline polymer | Ryuzo Ueno, Kiichi Kometani, Hiroyuki Kato, Motoki Asahara | 2007-02-20 |
| 7169523 | Charge controllers | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori, Nobuhiro Yonetani | 2007-01-30 |
| 7074536 | Alkylenebisnaphtol derivative and charge control agent which consists of the same | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori, Nobuhiro Yonetani | 2006-07-11 |
| 7030261 | Method for preparing 2-hydroxy-6-ureidocarbonyl naphthalene derivative | Hiroyuki Wakamori, Nobuhiro Yonetani | 2006-04-18 |
| 6984712 | Liquid-crystal polyester resin | Ryuzo Ueno, Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda | 2006-01-10 |
| 6891072 | Process for production of dimers or aromatic monohydroxyl compounds | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori, Hikari Hirai | 2005-05-10 |
| 6849742 | Binaphthol derivative and process for producing the same | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori | 2005-02-01 |
| 6802989 | Liquid crystal polyester resin | Ryuzo Ueno, Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda | 2004-10-12 |
| 6673962 | Granule of parahydroxybenzoic acid or parahydroxybenzoic ester and process for producing the same | Ryuzo Ueno, Nobutaka Izumichi, Masaharu Kittaka | 2004-01-06 |
| 6664341 | Liquid-crystal polyester resin composition | Kiichi Kometani, Naoshi Saito | 2003-12-16 |
| 6639092 | Metal salt of binaphthol derivative and method for preparing the same | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori | 2003-10-28 |
| 6562998 | Granules of 2-hydroxynaphthalene-3-carboxylic acid and method for preparing the same | Ryuzo Ueno, Nobutaka Izumichi, Syungo Nara, Masaharu Kittaka | 2003-05-13 |
| 6548703 | Toning agent | Ryuzo Ueno, Kenji Minami, Masamitsu Kubotsu | 2003-04-15 |
| 6451988 | Naphthol derivatives | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori | 2002-09-17 |
| 6451109 | Columnar crystals of 6-hydroxy-2-naphthoic acid and process for manufacturing the same | Ryuzo Ueno, Hiroyuki Kato, Ryoichi Otsuka | 2002-09-17 |
| 6409812 | AZO compounds and process for producing the same | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori | 2002-06-25 |
| 6403827 | Crystal of 2-hydroxynaphthalene-3-carboxylic acid and process for the preparation thereof | Ryuzo Ueno, Nobutaka Izumichi, Hiroyuki Kato | 2002-06-11 |
| 6388045 | Liquid-crystalline polymer | Ryuzo Ueno, Kiichi Kometani, Taihei Hamasaki, Motoki Asahara | 2002-05-14 |
| 6284924 | Compounds | Ryuzo Ueno, Kenji Minami, Hiroyuki Wakamori, Naoko Mori | 2001-09-04 |
| 6252104 | Naphthol derivatives and process for producing the same | Ryuzo Ueno, Shigeru Ito, Kenji Minami | 2001-06-26 |