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. 05, 1977
Filed:
Nov. 09, 1966
Applicant:
Inventors:
William Alexander, Kingston, CA;
Alfredo Guillermo Causa, Akron, OH (US);
James Girvan Fraser, Kingston, CA;
Assignee:
Millhaven Fibers, Ltd., , CA;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260873 ; 1523 / ;
Abstract
In the preparation of a fiber-forming polyester, the number of free carboxyl end groups present in the polymer may be reduced by adding to the polymerized polyester a glycidyl ether which reacts with the carboxyl end groups present to form free hydroxyl end groups.
Alexander, William. (1977). Process for the control of carboxyl end groups in fiber-forming (U.S. Patent No. 4016142). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4016142
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile