Issued Patents All Time
Showing 51–75 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695911 | Optical recording medium | Hisato Itoh, Akio Karasawa, Takahisa Oguchi, Shin Aihara | 1997-12-09 |
| 5693396 | Phthalocyanine compounds and optical recording media comprising them | Tsutami Misawa, Taizo Nishimoto, Takeshi Tsuda, Keisuke Takuma | 1997-12-02 |
| 5672462 | Optical recording medium | Keisuke Takuma, Tsutami Misawa, Taizo Nishimoto, Takeshi Tsuda, Hideki Umehara | 1997-09-30 |
| 5646273 | Phthalocyanine compound and optical recording medium containing it | Takahisa Oguchi, Hideki Umehara, Ryu Oi, Hisato Itoh | 1997-07-08 |
| 5597386 | Hair coloring composition comprising anti-hair antibodies immobilized on coloring materials, and hair coloring methods | Shigeru Igarashi, Toshihiro Usui, Junichiro Hiraoka, Keiko Hashimoto, Hideyo Uchiwa +3 more | 1997-01-28 |
| 5578419 | Dyes for color filters, and photosensitive resist resin composition containing the same | Hisato Itoh, Akio Karasawa | 1996-11-26 |
| 5482804 | Resin composition for color filter | Hisato Itoh, Akio Karasawa | 1996-01-09 |
| 5446142 | Phthalocyanine and naphthalocyanine light-absorbing compound and optical recording medium containing same | Hisato Itoh, Takahisa Oguchi, Ryu Oi, Hideki Umehara, Shin Aihara | 1995-08-29 |
| 5425937 | Hair treatment composition and hair care product, both containing anti-keratin antibody, and production of anti-keratin antibody | Hideyo Uchiwa, Makoto Hirano, Umeji Murakami, Hiromi Minamino, Toshio Horikoshi +2 more | 1995-06-20 |
| 5380842 | Phthalocyanine compounds and usage thereof | Hisato Itoh, Akio Karasawa, Takahisa Oguchi, Shin Aihara | 1995-01-10 |
| 5358833 | Amorphous phthalocyanine compound or mixture of amorphous phthalocyanine compounds, and method for preparing same | Hisato Itoh, Takahisa Oguchi, Shin Aihara | 1994-10-25 |
| 5350843 | Halogenated phthalocyanine compound, method for preparing same | Hisato Itoh, Takahisa Oguchi, Shin Aihara | 1994-09-27 |
| 5334714 | Method for preparing alkoxyphthalocyanine | Takahisa Oguchi, Shin Aihara, Hisato Itoh, Mansuke Matsumoto, Toshihiro Masaoka +1 more | 1994-08-02 |
| 5220010 | Method for preparation alkoxyphthalocyanine | Takahisa Oguchi, Shin Athara, Hisato Itoh, Mansuke Matsumoto, Toshihiro Masaoka +1 more | 1993-06-15 |
| 5077436 | Bis(3-aminophenoxy) aromatics and method of preparing the same | Yukihiro Yoshikawa, Keizaburo Yamaguchi, Yoshimitsu Tanabe, Akihiro Yamaguchi | 1991-12-31 |
| 5013848 | Aromatic bismaleimide derivatives and process for preparing same | Yukihiro Yoshikawa, Midori Yamazaki, Keizaburo Yamaguchi, Yoshimitsu Tanabe, Akihiro Yamaguchi | 1991-05-07 |
| 4873087 | Suppository preparation having excellent absorption property | Masataka Morishita, Renji Aikawa, Shigeo Katsuragi, Yoshiaki Yamamoto | 1989-10-10 |
| 4803258 | Thermoplastic aromatic polyether-pyridine and process for preparing same | Keizaburo Yamaguchi, Hideaki Oikawa, Masahiro Ohta, Akihiro Yamaguchi | 1989-02-07 |
| 4769463 | 2,6-bis(aminophenoxy)pyridine and method of preparing the same | Keizaburo Yamaguchi, Yukihiro Yoshikawa, Yoshimitsu Tanabe, Akihiro Yamaguchi | 1988-09-06 |
| 4754068 | 1,3-bis(3-aminophenoxy)-5-halogenobenzenes and process for their preparation | Keizaburo Yamaguchi, Yukihiro Yoshikawa, Yoshimitsu Tanabe, Akihiro Yamaguchi | 1988-06-28 |
| 4751328 | Process for producing aminobenzylamines | Keizaburo Yamaguchi, Yoshimitsu Tanabe, Midori Yamazaki, Akihiro Yamaguchi | 1988-06-14 |
| 4724268 | Purification process of 3,3'-dinitrodiphenyl compounds | Keizaburo Yamaguchi, Yoshimitsu Tanabe, Teruyuki Nagata, Akihiro Yamaguchi | 1988-02-09 |
| 4701567 | Process for producing 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane | Yoshimitsu Tanabe, Keizaburo Yamaguchi, Yukihiro Yoshikawa, Akihiro Yamaguchi | 1987-10-20 |
| 4692554 | Process for producing 1,3-bis(3-aminophenoxy)benzene | Keizaburo Yamaguchi, Yukihiro Yoshikawa, Yoshimitsu Tanabe, Akihiro Yamaguchi | 1987-09-08 |
| 4671890 | Aminobenzylamine composition | Keizaburo Yamaguchi, Yoshimitsu Tanabe, Midori Yamazaki, Akihiro Yamaguchi | 1987-06-09 |