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. 31, 1996
Filed:
Oct. 24, 1995
Applicant:
Inventors:
Thomas L Guggenheim, Mt. Vernon, IN (US);
Sharon M Fukuyama, Parkersburg, WV (US);
Gregory L Warner, Schenectady, NY (US);
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 35 ; 159D / ; 203 49 ; 203 98 ; 4233942 ;
Abstract
Tetranitromethane and other polynitrated methanes can be effectively removed from otherwise substantially organic-free nitric acid streams through the addition of substantially organic-free concentrated sulfuric acid and by, optionally, performing secondary operations such as sparging the mixed acid stream with a gas such as nitric oxide or with an oil.