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:
Aug. 17, 1993
Filed:
Feb. 13, 1991
Applicant:
Inventors:
Assignee:
Toyo Engineering Corporation, Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528483 ; 528481 ; 528490 ; 528497 ; 528498 ; 528503 ;
Abstract
There is disclosed a method for purifying a polymer by extracting volatile materials contained in the molten polymer. According to the disclosure, a polymer having a very high degree of extraction of volatile materials can be obtained. The polymer obtained by the method of disclosure can meet the severe demands of the market that restricts the concentration of remaining volatile material impurities.
Miyakawa, Hisashi. (1993). Method for purifying polymer (U.S. Patent No. 5237048). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5237048
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile