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:
Feb. 22, 1994
Filed:
Oct. 30, 1991
Applicant:
Inventors:
Martin B Sherwin, Potomac, MD (US);
Puvin Pichaichanarong, Baltimore, MD (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564301 ; 564300 ;
Abstract
Catalytic hydrogenation of nitroalkane to N-alkylhydroxylamine free base in the absence of transition metal ions, and omission of acid and the resultant free base is storage stable, permitting shipment and storage of 15% aqueous solution for use as oxygen scavenger in boiler feed water treatment.