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:
Oct. 12, 1993
Filed:
May. 28, 1991
Applicant:
Inventors:
A Dale Harley, Midland, MI (US);
Jose Puga, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558274 ;
Abstract
A process for the production of a diaryl carbonate useful in the preparation of polycarbonate molding resins comprising contacting an aromatic hydroxy compound and a carbonyl halide or aryl haloformate in the presence of a catalyst comprising aluminum trifluoride.
Harley, A. (1993). Aluminum trifluoride catalyst for production of diaryl carbonates (U.S. Patent No. 5252771). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5252771
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile