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. 25, 2012
Filed:
Oct. 12, 2007
Shintaro Kikuchi, Saitama, JP;
Kotaro Takita, Nasusiobara, JP;
Shintaro Kikuchi, Saitama, JP;
Kotaro Takita, Nasusiobara, JP;
Abstract
A microporous membrane comprising (a) from 40 to 60% of a first polyethylene resin having a weight average molecular weight of from 3×10to 3.5×10and a molecular weight distribution of from 5 to 50, (b) from 20 to 40% of a first polypropylene having a weight average molecular weight of from 0.9×10to 1.1×10, a molecular weight distribution of from 1 to 50, and a heat of fusion of from to 120 J/g, (c) from 10 to 25% of a second polypropylene having a weight average molecular weight of from 5.7 to 10to 6.6×10, a molecular weight distribution of from 5 to 50, and a heat of fusion of from 80 to 120 J/g, and (d) from 0 to 10% of a second polyethylene resin having a weight average molecular weight of from 1×10to 3×10and a molecular weight distribution of from 5 to 50, percentages based on the mass of the membrane.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile