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.:
Date of Patent:
Mar. 01, 1988
Filed:
May. 01, 1986
Applicant:
Inventors:
Masaki Yamamoto, Osaka, JP;
Hiroaki Okada, Osaka, JP;
Yasuaki Ogawa, Osaka, JP;
Tsutomu Miyagawa, Saitama, JP;
Assignees:
Takeda Chemical Industries, Ltd., Osaka, JP;
Wako Pure Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528361 ; 528354 ; 528499 ;
Abstract
The present invention provides a biodegradable high molecular polymer characterized in that the content of water-soluble low molecular compounds, as calculated on the assumption that said compounds each is a monobasic acid, is less than 0.01 mole per 100 grams of said high molecular polymer. The thus-obtained molecular polymer has good aging stability and can be used advantageously as an excipient for pharmaceutical preparations.