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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5395628 B1

PDFFull Text
Date of Patent:
Mar. 07, 1995

Filed:

Apr. 13, 1992

Controlled release succinic acid microcapsules coated with aqueous

Applicant:
Inventors:

Kazuo Noda, Takarazuka, JP;

Yoshiyuki Hirakawa, Kobe, JP;

Hiroyuki Yoshino, Suita, JP;

Shinji Narisawa, Takatsuki, JP;

Assignee:

Tanabe Seiyaku Co., Ltd., Osaka, JP;

Attorney:

Browdy and Neimark

Primary Examiner:

Thurman K Page

Assistant Examiner:

Neil Levy

Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424490 ; 424468 ; 424474 ; 424487 ;
Abstract

A controlled release pharmaceutical preparation comprising (a) a core containing a pharmaceutically active substance and an organic acid, and (b) a coating film formed on the surface of the core by aqueous coating of a water-insoluble and water-slightly permeable acrylic polymer containing a trimethylammonium-ethyl group, which exhibits well controlled dissolution and release of the pharmaceutically active substance when administered and can maintain the desired blood level of the active substance for a long period of time, and a method for producing the preparation.

Find Patent Forward Citations

Noda, Kazuo. (1995). Controlled release succinic acid microcapsules coated with aqueous (U.S. Patent No. 5395628). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5395628

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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