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. 22, 1992
Filed:
Feb. 28, 1990
Applicant:
Inventors:
Michel Costantini, Lyons, FR;
Eric Garcin, Montrouge, FR;
Michel Gubelmann, Lyons, FR;
Jean-Michel Popa, Drancy, FR;
Assignee:
Rone-Poulenc Chimie, Courbevoie, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568771 ; 568629 ; 568638 ; 568643 ; 568644 ; 568646 ; 568650 ; 568651 ; 568652 ; 568653 ; 568743 ; 568747 ; 568766 ; 568768 ;
Abstract
The phenols and phenol ethers, e.g., phenol itself, are effectively hydroxylated by reacting hydrogen peroxide therewith, in the presence of a catalytically effective amount of titanium dioxide.