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:
Sep. 05, 1989
Filed:
Apr. 21, 1983
Applicant:
Inventor:
Peter J Metcalfe, Cottingham, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61L / ; C08J / ;
U.S. Cl.
CPC ...
428131 ; 428137 ; 4283044 ;
Abstract
The present invention is directed to an elastic apertured film which contains voids. The film comprises a blend of polyurethane and an incompatible polymer which forms a discrete phase within the matrix of polyurethane. The film is in the form of a net. The area of apertures is 5 to 75% of the total area of the film or alternatively, the film is in the form of an interrupted film containing a pattern of holes which have a maximum dimension of not more than 3 times the thickness of the film.