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. 18, 1984
Filed:
Mar. 02, 1982
Applicant:
Inventors:
Masaaki Sugimoto, Kanagawa, JP;
Yukio Watanabe, Kanagawa, JP;
Kunio Bizen, Kanagawa, JP;
Tsunemitsu Hasegawa, Kanagawa, JP;
Masahiro Morita, Kanagawa, JP;
Assignee:
Mitsubishi Chemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29H / ;
U.S. Cl.
CPC ...
264 41 ; 264147 ; 264D / ; 524481 ; 524583 ;
Abstract
A process for producing a porous film or sheet, which comprises melt-molding a composition prepared by compounding 100 parts by weight of a polyolefin resin with 25 to 400 parts by weight of a filler and 1 to 100 parts by weight of a liquid or waxy hydrocarbon polymer into film or sheet, and stretching the resulting film or sheet.