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. 11, 1978
Filed:
Feb. 12, 1974
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 260 / ; 2604 / ;
Abstract
Polyaminopolyarylmethanes and an aromatic monoamine unsubstituted in an ortho or a para position to the amino group are heated in water to produce diaminodiarylmethanes.