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:
Apr. 14, 1987
Filed:
Jan. 30, 1986
Applicant:
Inventors:
Hideki Kuwabara, Hadano, JP;
Masato Naito, Hiratsuka, JP;
Assignee:
Japan Styrene Paper Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ; C08J / ; B32B / ;
U.S. Cl.
CPC ...
521 56 ; 428357 ; 428402 ; 521 58 ; 521 59 ; 521 60 ; 521139 ;
Abstract
An energy absorber suitable for use as a bumper core or the like is formed of an expansion-molded article of prefoamed particles. The prefoamed particles use, as the base resin thereof, a resin obtained by impregnating high-density polyethylene with an aromatic vinyl monomer and polymerizing the monomer. The absorber has a density (.rho.) of 0.015-0.15 g/cm.sup.3 and satisfies the following relation:
Kuwabara, Hideki. (1987). Energy absorber (U.S. Patent No. 4657937). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4657937
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile