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:
Dec. 10, 1991
Filed:
Nov. 03, 1988
Applicant:
Inventors:
Roger H Tu, Lake Forest, CA (US);
Wilfred F Mathewson, Dana Point, CA (US);
Mark A Roberts, Costa Mesa, CA (US);
Assignee:
Baxter International Inc., Deerfield, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; C08F / ;
U.S. Cl.
CPC ...
264119 ; 264127 ; 2642888 ; 2642893 ; 2642902 ; 428422 ; 526255 ;
Abstract
Interpenetrated matrix of polytetrafluoroethylene and elastomer is disclosed. The matrix is formed into a composite material which is flexible, durable, highly porous with a tight microporous structure and improved retractability. The composite material is subjected to a multi-expansion process to produce shaped articles such as films, tubes, rods and filaments with excellent flexibility and elasticity. More particularly, the composite material can be utilized to produce vascular grafts with excellent biological compatibility.