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:
Jan. 29, 1985
Filed:
May. 07, 1984
Applicant:
Inventors:
Francis E Gould, Princeton, NJ (US);
Christian W Johnston, Neshanic Station, NJ (US);
Assignee:
Tyndale Plains-Hunter, Ltd., Princeton, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; A61J / ; A61J / ;
U.S. Cl.
CPC ...
424 19 ; 3511 / ; 428 36 ; 4284231 ; 428343 ; 424 28 ;
Abstract
Shaped three-dimensional structures formed of polyurethane polyene compositions obtained by reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane resin. The resulting products will swell and increase in weight upon immersion in water and are permeable to gases, moisture vapor, ions, and other low molecular weight species. The hydrophilic polyurethane polyene compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory.