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. 20, 1983
Filed:
Feb. 09, 1981
Applicant:
Inventors:
Harold Beuther, Cheswick, PA (US);
Johann G Schulz, Pittsburgh, PA (US);
Assignee:
Gulf Research & Development Company, Pittsburgh, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02C / ;
U.S. Cl.
CPC ...
60 39461 ; 44 53 ; 44 56 ; 110347 ; 123 / ; 1231 / ; 208 / ;
Abstract
Process for operating a furnace or a combustion engine which comprises burning in said furnace or said combustion engine a mixture of polycyclic, polycarboxylic acids obtained by oxidizing coal with aqueous nitric acid, separating from the resulting product an aqueous phase and a solid phase and then extracting the solid phase with a solvent to recover said mixture.