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:
Mar. 11, 1980
Filed:
Mar. 30, 1978
Applicant:
Inventors:
Joachim Paust, Neuhofen, DE;
Horst Schumacher, Bobenheim am Berg, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603407 ;
Abstract
Cyclic methyl fumaraldehyde monoacetals and a process for their production by oxidation of the corresponding methylbut-2-en-4-ol-1-al acetal with an H.sub.2 SO.sub.4 -containing solution of chromic acid in acetone. The new compounds are of considerable interest as intermediates in the synthesis of carotinoids.