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:
Jun. 02, 1992
Filed:
Oct. 10, 1989
Applicant:
Inventor:
Michael Szycher, Lynnfield, MA (US);
Assignee:
PolyMedica Industries, Inc., Woburn, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08F / ; C08J / ; A61K / ;
U.S. Cl.
CPC ...
528 75 ; 528904 ; 526301 ; 525920 ; 522 34 ; 522 39 ; 522 42 ; 522 90 ; 424401 ; 424435 ; 424443 ; 424448 ; 424449 ;
Abstract
A non-toxic hydrophilic polyurethane elastomer having less than about 0.5% by weight extractables and which is curable in the absence of heat is disclosed. The elastomers are prepared from suitable hydrophilic polyurethane oligomers in combination with suitable ultraviolet light absorbers which become chemically bound into the elastomer during the polymerization (curing) thereof and thus become essentially non-extractable therefrom.