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. 07, 1989
Filed:
Oct. 17, 1986
Applicant:
Inventors:
Francis E Gould, Princeton, NJ (US);
Charles K Kliment, Princeton, NJ (US);
George E Seems, Pennington, NJ (US);
Assignee:
Tyndale Plains-Hunter Ltd., Princeton, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 357 ; 1283481 ; 4273136 ; 428403 ; 4284231 ; 428420 ; 4284242 ; 428 368 ; 428 3691 ; 521 53 ; 521 55 ; 521176 ; 528 76 ; 528 36 ; 604 96 ; 604264 ;
Abstract
The coefficient of friction of surfaces of articles, wherein the surface comprises a hydrophilic polyurethane polymer, is reduced by treating the surface with a mixture of concentrated sulfuric acid and a low molecular weight organic polyhydroxy compound, and removing excess treating mixture. Typical low friction articles produced thereby are boat hulls having drag resistant coatings, conduits having low friction linings, and cannula or body implants having slippery surfaces.