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:
Jan. 18, 1983
Filed:
Sep. 14, 1981
Applicant:
Inventors:
James L Grainger, College Park, GA (US);
Kent D Campbell, Concord, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
542443 ; 542437 ; 548122 ;
Abstract
Cyclic nitrile sulfites are prepared by reacting the corresponding amide with sulfur dioxide in a solvent and in the presence of an oxidizing agent, e.g., lead tetraacetate, and a catalyst, e.g., triethylamine.