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. 08, 1977
Filed:
Jun. 16, 1976
Applicant:
Inventors:
Masahiro Ozawa, Kamifukuoka, JA;
Fumio Inoue, Kamifukuoka, JA;
Tadaaki Komatsu, Saitama, JA;
Kimiaki Matsuoka, Kawagoe, JA;
Assignee:
Central Glass Company, Limited, Ube, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C08F / ; C07C / ;
U.S. Cl.
CPC ...
2606 / ;
Abstract
Oligomers of tetrafluoroethylene are prepared by oligomerization of tetrafluoroethylene in an organic solvent in the presence of a fluoride compound and a crown ether. The catalytic action of the fluoride compound can be far improved when the fluoride compound is used together with a crown ether.