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:
Dec. 02, 1986
Filed:
May. 28, 1985
Applicant:
Inventors:
Tai K Kim, Towanda, PA (US);
Robert P McClintic, Montroeton, PA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423593 ; 23300 ;
Abstract
A process is disclosed for producing a relatively pure solid ammonium metatungstate by precipitating the solid from a mixture of an ammonium metatungstate solution and a lower alcohol having the formula C.sub.n H.sub.n+1 OH. The ammonium metatungstate solution which is used can be made by any means including the adjusting the pH of an ammonium paratungstate solution followed by digestion of the solution to form ammonium metatungstate.