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. 17, 1984
Filed:
Dec. 07, 1982
Applicant:
Inventors:
Hiroyuki Akiyama, Hiratsuka, JP;
Hideki Kuwabara, Hatano, JP;
Toru Yamaguchi, Tsukui, JP;
Masahiko Kishida, Hiratsuka, JP;
Assignee:
Japan Styrene Paper Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
264 53 ; 264D / ; 264D / ; 521 58 ;
Abstract
A method for pressurizing pre-foamed particles of a polyolefin resin by maintaining the pre-foamed particles in an atmosphere of a pressurized gas to impart a predetermined internal pressure thereto, which comprises first maintaining the particles under a pressure which does not cause shrinkage to the particles, and then increasing the applied pressure gradually under conditions which do not cause shrinkage to the particles.
Akiyama, Hiroyuki. (1984). Method of pressurizing treatment of pre-foamed particles of polyolefin (U.S. Patent No. 4443393). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4443393
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile