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. 16, 1976
Filed:
Sep. 06, 1974
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260576 ; 2524 / ;
Abstract
In repairing diphenylamine by reacting aniline in a liquid phase in the presence of a catalyst at a temperature of about 320.degree. to about 370.degree.C, a process which is characterized in that said catalyst is an amorphous synthetic silica-alumina catalyst containing 5 to 50% by weight of alumina.
Naramoto, Isao. (1976). Process for preparing diphenylamine from aniline (U.S. Patent No. 3944613). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3944613
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile