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:
Sep. 28, 1999
Filed:
Oct. 20, 1998
Applicant:
Inventors:
Bernd Gallenkamp, Wuppertal, DE;
Lothar Rohe, Wuppertal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548243 ;
Abstract
By a novel process, 3,5-dimethylisoxazole-4-sulphonyl chloride is prepared by reacting 3,5-dimethylisoxazole initially with chlorosulphonic acid and then additionally with thionyl chloride at a temperature between 60.degree. C. and 110.degree. C.