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. 17, 2000
Filed:
Mar. 23, 1999
Applicant:
Inventors:
Richard M Wehmeyer, Lake Jackson, TX (US);
Emmett L Tasset, Lake Jackson, TX (US);
Marlin E Walters, West Columbia, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502159 ; 502216 ; 502168 ; 5253335 ;
Abstract
A catalyst useful for the condensation of an aldehyde or ketone starting material with a phenol is an insoluble mercaptosulfonic acid compound. The heterogeneous catalysts comprise catalytically-active species represented by the formula: ##STR1## L is an optional linking group and--is a bond, which catalytically-active species is attached by the bond--to an insoluble organic or inorganic support;
Quick Actions:
Wehmeyer, Richard. (2000). Supported mercaptosulfonic acid compounds useful as catalysts for (U.S. Patent No. 6133190). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6133190
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile