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. 21, 1995
Filed:
Jul. 01, 1991
Applicant:
Inventors:
Jean-Louis Guth, Brunstatt, FR;
Michel Costantini, Lyons, FR;
Annie Lopez, Saint Wandrille Rancon, FR;
Jean-Michel Popa, Drancy, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; B01J / ;
U.S. Cl.
CPC ...
423705 ; 423326 ; 423704 ; 502 64 ;
Abstract
Calcined silica/oxide zeolites, characteristically MFI stannozeosilites or zirconozeosilites, well adopted for catalyzing the H.sub.2 O.sub.2 hydroxylation of phenols or phenol ethers, have the formula (I):