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Masayoshi Abe
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Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Quinolinone derivative, method for preparing the same, and anti-all...
Patent number
6,271,416
Issue date
Aug 7, 2001
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Quinolinone derivative, method for preparing the same, and anti-all...
Patent number
6,136,822
Issue date
Oct 24, 2000
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Quinolinone derivative and anti-allergic agent with said quinolinon...
Patent number
6,114,352
Issue date
Sep 5, 2000
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Benzopyran derivative and method for treating heart disease using t...
Patent number
5,981,495
Issue date
Nov 9, 1999
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Quinolinone derivative and anti-allergic agent with said quinolinon...
Patent number
5,942,521
Issue date
Aug 24, 1999
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
7-glycosyloxybenzopyran derivative and antiallergic agent containin...
Patent number
5,580,552
Issue date
Dec 3, 1996
Dainippon Ink & Chemicals Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
3- or 4-glycosyloxybenzopyran derivative and antiallergic agent con...
Patent number
5,525,595
Issue date
Jun 11, 1996
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Benzopyran derivatives and an anti-allergic agent possessing the sa...
Patent number
5,428,059
Issue date
Jun 27, 1995
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Chalcone derivatives and process for producing the same
Patent number
5,068,364
Issue date
Nov 26, 1991
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Steroid compounds and process of preparing the same
Patent number
4,874,855
Issue date
Oct 17, 1989
Dainippon Ink and Chemicals, Inc.
Hidetsugu Takagaki
C07 - ORGANIC CHEMISTRY