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:
Oct. 05, 1999
Filed:
Jul. 30, 1998
Applicant:
Inventors:
Clive M Brereton, Richmond, CA;
Alfred A Guenkel, Vancouver, CA;
Assignee:
Noram Engineering & Constructors Ltd., Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568927 ; 568932 ; 568939 ;
Abstract
A continuous process to nitrate a nitratable aromatic compound utilizing nitric acid and sulfuric acid feed stocks is described. The process includes the collecting of NO.sub.x O gases with water under pressure to and treating the NO.sub.x gases with water under pressure to produce weak nitric acid which is recycled to the nitric acid feed stock. The process is efficient, permitting the venting of NO.sub.x free gases to the atmosphere.