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. 09, 1981
Filed:
Nov. 27, 1979
Applicant:
Inventors:
Yuzuru Ogata, Tokushima, JP;
Yoshifumi Nakacho, Sakai, JP;
Assignee:
Otsuka Chemical Co. Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210660 ; 210690 ; 423300 ; 423302 ;
Abstract
A process for separating cyclic phosphazene oligomers from a mixture containing cyclic phosphazene oligomers and linear phosphazenes by bringing the mixture into contact with a mineral adsorbent composed of mainly silicon and/or aluminum and removing the adsorbent. Cyclic phosphazene oligomers of high purity can be readily separated in high yields by the process.