Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11110038 | Dental polymerizable monomers, compositions, adhesive dental materials and kits | Kazuhiko Yoshinaga, Shinsuke Kinoshita, Takenori MITAMURA, Hiroki Murai, Takeshi Yokoyama +7 more | 2021-09-07 |
| 10470980 | Dental polymerizable monomers, compositions, adhesive dental materials and kits | Kazuhiko Yoshinaga, Shinsuke Kinoshita, Takenori MITAMURA, Hiroki Murai, Takeshi Yokoyama +7 more | 2019-11-12 |
| 9511004 | Dental material, dental material composition, dental restorative material, and cured product | Hiroshi Naruse, Osamu Kohgo, Masataka MIYASATO, Hideyuki Ueki, Chidzuru INAMI +1 more | 2016-12-06 |
| 9504632 | Compound, composition comprising the compound and cured product | Hiroshi Naruse, Osamu Kohgo, Masataka MIYASATO, Hideyuki Ueki, Chidzuru INAMI +1 more | 2016-11-29 |
| 8778510 | Pyrromethene-boron complex compounds and organic electroluminescent elements using same | Fumio Okuda, Kiyoshi Ikeda, Takayasu Sado, Takahiko Ochi, Bunji Sawano | 2014-07-15 |
| 6383982 | Color developer composition, aqueous dispersion, recording sheet and color developing ink | Jotaro Kida, Nobuhiro Takizawa, Masakatsu Nakatsuka | 2002-05-07 |
| 5647896 | Color-developing agents and color-developing sheets | Takeshi Nishimura, Tomoko Kamashita, Masaru Wada, Teruyuki Nagata, Kiyoharu Hasegawa +1 more | 1997-07-15 |
| 5525686 | Polyvalent metal salt of salicyclic acid resin and process for preparing it | Jotaro Kida, Kiyoharu Hasegawa, Masakatsu Nakatsuka, Masayuki Furuya, Takeshi Nishimura | 1996-06-11 |
| 5484948 | Bismaleimide compounds | Keizaburo Yamaguchi, Tatsuhiro Urakami, Midori Yamazaki, Shoji Tamai, Norimasa Yamaya +2 more | 1996-01-16 |
| 5476957 | Salicylic acid derivatives | Yuki Kobayashi, Atsuo Otsuji, Masakatsu Nakatsuka, Akihiro Yamaguchi | 1995-12-19 |
| 5447901 | Color-developing compositions and their use | Keizaburo Yamaguchi, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1995-09-05 |
| 5391806 | Heat-sensitive recording materials and phenol compounds | Atsuo Otsuji, Toshihiro Motoshima, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Masakatsu Nakatsuka +1 more | 1995-02-21 |
| 5376615 | Color-developing compositions and their use | Keizaburo Yamaguchi, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1994-12-27 |
| 5364967 | Aromatic diamine compounds, bismalemide compounds, thermosetting resin forming compositions therefrom, resin therefrom, and methods for their preparation | Keizaburo Yamaguchi, Tatsuhiro Urakami, Midori Yamazaki, Shoji Tamai, Norimasa Yamaya +2 more | 1994-11-15 |
| 5326739 | Process for producing 3,5-di(.alpha.-methylbenzyl)salicylic acid derivative, and use of polyvalent-metal-modified product thereof as color developer | Keizaburo Yamaguchi, Akihiro Yamaguchi | 1994-07-05 |
| 5306688 | Salicylic acid derivatives, the process for preparing the same and the heat-sensitive recording materials comprising thereof | Yuki Kobayashi, Atsuo Otsuji, Masakatsu Nakatsuka, Kiyoharu Hasegawa, Kazuyoshi Kikkawa +3 more | 1994-04-26 |
| 5281570 | Thermochromic materials | Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Masakatsu Nakatsuka, Akihiro Yamaguchi | 1994-01-25 |
| 5274150 | Process for producing 3,5-di(.alpha.-methylbenzyl)salicyclic acid derivative, and use of polyvalent-metal-modified product thereof as color developer | Keizaburo Yamaguchi, Akihiro Yamaguchi | 1993-12-28 |
| 5270281 | Heat-sensitive recording materials and phenol compounds | Atsuo Otsuji, Toshihiro Motoshima, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Masakatsu Nakatsuka +1 more | 1993-12-14 |
| 5260403 | Color-developing composition, aqueous suspension of the composition, and color-developing sheet produced using the suspension and suitable for use in pressure-sensitive copying paper | Keizaburo Yamaguchi, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1993-11-09 |
| 5206438 | Aromatic diamine compounds, bismaleimide compounds, thermosetting resin forming compositions therefrom, resins therefrom, and methods for their preparation | Keizaburo Yamaguchi, Tatsuhiro Urakami, Midori Yamazaki, Shoji Tamai, Norimasa Yamaya +2 more | 1993-04-27 |
| 5145949 | Production process for making aromatic amine resins | Keizaburo Yamaguchi, Tatsuhiro Urakami, Akihiro Yamaguchi, Norimasa Yamaya, Masahiro Ohta | 1992-09-08 |
| 5106953 | Aromatic amine resins, processes for producing the same and a thermosetting resin composition containing the same | Keizaburo Yamaguchi, Tatsuhiro Urakami, Akihiro Yamaguchi, Norimasa Yamaya, Masahiro Ohta | 1992-04-21 |
| 5079331 | Heat-resistant epoxy resin composition based on 2-(4-hydroxyphenyl)-2-(4-maleimidophenyl)propane | Mikio Kitahara, Koichi Machida, Takayuki Kubo, Motoyuki Torikai, Koutarou Asahina +2 more | 1992-01-07 |
| 5077436 | Bis(3-aminophenoxy) aromatics and method of preparing the same | Yukihiro Yoshikawa, Keizaburo Yamaguchi, Kenichi Sugimoto, Akihiro Yamaguchi | 1991-12-31 |