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:
Jun. 11, 1985
Filed:
Oct. 09, 1984
Applicant:
Inventors:
Hiroshi Tanino, Hasuda, JP;
Tetsuhiko Okamoto, Tokyo, JP;
Shinichiro Ueyama, Tokyo, JP;
Kazuhiko Fujikawa, Tokyo, JP;
Takatoshi Tsumiyama, Toyonaka, JP;
Assignee:
Shin Nisso Kako Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C01B / ;
U.S. Cl.
CPC ...
203 52 ; 203 69 ; 203 70 ; 203 91 ; 423300 ; 423302 ;
Abstract
A process for completely separating tri(phosphonitrile chloride) from tetra(phosphonitrile chloride) and/or phosphonitrile chloride oligomer which includes vacuum distillation of the phosphonitrile chloride mixture together with an inert mixture of hydrocarbons as solvent.