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. 01, 2005
Filed:
Jul. 03, 2003
Applicants:
Allan William Timms, Cheshire, GB;
William Arthur Green, Cheshire, GB;
Inventors:
Allan William Timms, Cheshire, GB;
William Arthur Green, Cheshire, GB;
Assignee:
Great Lakes (UK) Limited, Chesire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D335/08 ;
U.S. Cl.
CPC ...
Abstract
A one-step process for the preparation of a substituted thioxanthone, such as carboxymethoxythioxanthone, in high yields and as a single isomer. The substituted aryl compound is reacted with mercaptobenzoic acid or dithiobisbenzoic acid in the presence of sulphuric acid.