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:
Nov. 17, 1992
Filed:
Apr. 03, 1991
Applicant:
Inventor:
Alan B Newton, Lealholm, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 52 ; 560 64 ; 560 57 ; 560 53 ; 562460 ; 562403 ; 562473 ; 562 45 ; 568337 ; 568332 ; 558 44 ; 558 56 ;
Abstract
Acylation or sulphonylation of aromatic compounds, one of which is selected from aromatic carboxylic and sulphonic acids and esters and anhydrides thereof, using an aluminosilicate catalyst having acidic sites.