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. 30, 1993
Filed:
Oct. 24, 1990
Applicant:
Inventors:
Seiji Ishii, Yokohama, JP;
Tokuo Okada, Yokohama, JP;
Hiroshi Ohta, Yokohama, JP;
Hiroya Fukuda, Yokohama, JP;
Takashi Ohashi, Yokohama, JP;
Osamu Kondo, Yokohama, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427244 ; 427373 ;
Abstract
A method for producing a polyolefin foam sheet which includes heating a foamable base sheet comprising a polyolefin resin, a foaming agent, and a resin varnish. The resin of the varnish is selected from the group consisting of rosin, cumarone-indene resin, phenolic resin, alkyd resin, and shellac resin.