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, 1982
Filed:
Jun. 29, 1979
Applicant:
Inventor:
Kwok K Sun, Hamden, CT (US);
Assignee:
The Upjohn Company, Kalamazoo, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564331 ; 549336 ; 549344 ; 549388 ; 549406 ; 564322 ; 564333 ;
Abstract
A process is described for the preparation of bis(aminophenyl)alkanes and bis(aminophenyl)cycloalkanes which comprises condensing a m-alkylphenol with an alkanone or cycloalkanone and heating the resulting condensation product with an at least stoichiometric amount of an acid addition salt of aniline or a substituted aniline or a mixture of such amines.
Quick Actions:
Sun, Kwok. (1982). Process for preparing diaminodiphenyl-alkanes (U.S. Patent No. 4351957). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4351957
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile