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:
May. 19, 1981
Filed:
Feb. 25, 1980
Applicant:
Inventor:
Arthur E Gurgiolo, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
560 24 ; 560 25 ; 560 26 ; 560 27 ; 560 28 ; 560 29 ; 560 32 ; 2524 / ; 252475 ; 252461 ;
Abstract
Carbamates are prepared from organic carbonates and aromatic amines in the presence of zinc, tin or cobalt salts of monovalent organic compounds having a pKa value of less than 2.8 and compounds having more than one carboxyl group per molecule and oxides, sulfides and carbonates at a temperature of at least 200.degree. C.
Gurgiolo, Arthur. (1981). Preparation of carbamates from aromatic amines and organic carbonates (U.S. Patent No. 4268684). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4268684
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile