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:
Oct. 12, 1993
Filed:
Jul. 26, 1991
Applicant:
Inventors:
Jorg Daub, Regensburg, DE;
Knut M Rapp, Offstein, DE;
Petra Seitz, Straubing, DE;
Rainer Wild, Obrigheim, DE;
Josef Salbeck, Regensburg, DE;
Assignee:
Suddeutsche Zucker-Aktiengsellschaft, Mannheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
549491 ; 549214 ; 549218 ; 549472 ; 549481 ; 549497 ; 549499 ; 549502 ; 546283 ;
Abstract
A cycloadduct of the formula ##STR1## is prepared by reacting 2,2'-(2,5-furandiyldimethylidine)bis-propanedinitrile with 8-methoxypheptafulvene to form a tetrahydroazulene intermediate and then heating a solution of the tetrahydroazulene intermediate in a boiling solvent to drive off methanol.
Quick Actions:
Daub, Jorg. (1993). Dicyanoazulenyl and dicyanovinyl substituted furan (U.S. Patent No. 5252757). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5252757
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile