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. 30, 2002
Filed:
May. 11, 2000
Applicant:
Inventors:
Carlo Perego, Carnate, IT;
Alberto de Angelis, Legnano, IT;
Otello Farias, Rome, IT;
Aldo Bosetti, Vercelli, IT;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
C07C / ;
Abstract
Process for the production of diaminodiphenylmethane and its higher homologues products, which comprises reacting aniline, or one of its derivatives, and formaldehyde, or a compound capable of producing formaldehyde under the reaction conditions, in the presence of a zeolite in acid form having a spaciousness index ranging from 2.5 to 19.
Perego, Carlo. (2002). Process for the production of diaminodiphenylmethane and its higher homologues (U.S. Patent No. 6380433). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6380433
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile