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:
Apr. 13, 1976
Filed:
Dec. 06, 1973
Applicant:
Inventor:
Jules Freedman, Thiensville, WI (US);
Assignee:
Richardson-Merrell Inc., Wilton, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602 / ;
Abstract
Pure cis or trans-6-substituted-11-aminoalkylidenemorphanthridines are prepared by treating the corresponding cis or trans-5,6-dihydromorphanthridines with oxygen in the presence of a platinum on carbon catalyst. Among the compounds prepared are: