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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 5194464 B1

PDFFull Text
Date of Patent:
Mar. 16, 1993

Filed:

Mar. 23, 1990

Enteric film and preparatoin thereof

Applicant:
Inventors:

Shunichi Itoh, Suita, JP;

Hiroyoshi Koyama, Mishima, JP;

Toshio Kashihara, Suita, JP;

Shin-ichiro Hirai, Kyoto, JP;

Assignee:

Takeda Chemical Industries, Ltd., Osaka, JP;

Attorney:

Wegner, Cantor, Mueller & Player

Primary Examiner:

John Kight, III

Assistant Examiner:

P Hampton-Hightower

Int. Cl.
CPC ...
C08L / ; C08L / ; B05D / ;
U.S. Cl.
CPC ...
524 42 ; 524 43 ; 524 77 ; 1061631 ; 106170 ; 106178 ; 106180 ; 106188 ; 106189 ; 1061972 ; 106198 ; 427-3 ; 427214 ; 427220 ; 427221 ; 424463 ;
Abstract

An enteric film is produced by spraying on a material a mixed solution of (a) hydroxypropylmethylcellulose phthalate exhibiting a viscosity of about 136 to 204 centistokes as 10% methanol/dichloromethane (1:1 by weight) solution at 20.degree. C., (b) polyethylene glycol presenting solid state at ambient temperature and (c) shellac, wherein respective ratios of (b) and (c) to (a) are 0.1 to 20 weight percent and 5 to 40 weight percent; and then drying the solution. The enteric film excels in film strength and acid resistance, and can be employed in pharmaceutical preparations.

Find Patent Forward Citations

Itoh, Shunichi. (1993). Enteric film and preparatoin thereof (U.S. Patent No. 5194464). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5194464

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

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