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. 04, 1997
Filed:
Aug. 21, 1995
Applicant:
Inventors:
Gary S Smith, Collegeville, PA (US);
Robert Cordova, Bethlehem, PA (US);
Thomas H Overgaard, Redford Township, MI (US);
Marc T Budrick, Allen Park, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07E / ;
U.S. Cl.
CPC ...
564 98 ;
Abstract
A method is disclosed for the preparation of alkanesulfonamide containing low amounts of ammonium or alkylammonium-salt impurities wherein alkanesulfonamide is treated with a base to convert ammonium or alkylammonium-salt impurities to their corresponding base salts and to liberate neutral amine or ammonia.