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. 10, 1976
Filed:
Nov. 06, 1974
Applicant:
Inventor:
Charles R Bergeron, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423300 ;
Abstract
A method for the selective purification of phosphonitrilic chloride polymer mixtures to obtain substantially pure cyclic trimeric and tetrameric phosphonitrilic chloride polymers by distillaton under reduced pressure with inert solvent passed through the molten phosphonitrilic chloride mixture, optionally with prior solvent extraction and/or subsequent recrystallization from solvent.
Bergeron, Charles. (1976). Process for purification of phosphonitrilic chloride polymers (U.S. Patent No. 3974261). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3974261
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile