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:
Oct. 27, 1992
Filed:
Aug. 22, 1991
Applicant:
Inventors:
Mikio Katagiri, Tokyo, JP;
Tatsuo Kato, Yamaguchi, JP;
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428332 ; 428512 ; 428514 ; 428414 ; 428418 ;
Abstract
The present invention relates to a matt film comprising a paper and a poly-4-methyl-1-pentene film laminated at least one side of the paper, wherein said poly-4-methyl-1-pentene film has an average surface roughness R.sub.a in the range of 0.5 to 10 .mu.m. The matt film is suitably applicable to the preparation of cladding panels for multi-layer printed circuit boards.