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:
Oct. 19, 1993
Filed:
Dec. 09, 1991
Applicant:
Inventors:
Herman W Schlameus, San Antonio, TX (US);
Mary C Marshall, San Antonio, TX (US);
Stephen T Wellinghoff, San Antonio, TX (US);
Donald J Mangold, San Antonio, TX (US);
James R Scott, San Antonio, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ; B32B / ; C08K / ;
U.S. Cl.
CPC ...
521 54 ; 4283215 ; 4284022 ; 523222 ; 524423 ;
Abstract
A biodegradable composition comprising a polymer matrix having distributed substantially uniformly therethrough hollow sphere-like inclusions or microcapsules, said polymer matrix consisting essentially of a water-soluble polymer/polymer-compatible salt complex with said salt present in an amount sufficient to render said polymer insoluble in water and products made by shaping such composition.