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:
May. 04, 1976
Filed:
Nov. 17, 1972
Rostislav Didchenko, Middleburg Heights, OH (US);
Charles D Amata, Berea, OH (US);
Union Carbide Corporation, New York, NY (US);
Abstract
An improved process for producing carbon fibers by the pyrolysis of polyacrylonitrile fibers wherein the extended heat treatment heretofore required in order to stabilize the fiber structure so that it may be carbonized is completed in substantially shorter periods of time by effecting stabilization in an atmosphere containing both hydrogen chloride and oxygen. After the fibers have been thermally stabilized in this manner, they may be rapidly carbonized in times as short as one-half minute.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile