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:
Nov. 06, 1990
Filed:
Feb. 23, 1988
Applicant:
Inventors:
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525534 ; 525 50 ; 528 86 ; 528212 ;
Abstract
A phenolic polymer obtained by reacting a phenolic compound with a bis(hydroxyalkyl)benzene, followed by alkylation of ortho positions or para position with respect to the hydroxyl group of the terminal phenol groups of the produced polymer is suitable for use as a heat resistant antioxidant for thermoplastic resins
Kikuchi, Tohru. (1990). Phenolic polymer and production thereof (U.S. Patent No. 4968759). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4968759
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile