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. 11, 2008
Filed:
May. 04, 2007
Friedrich Jonas, Aachen, DE;
Klaus Wussow, Netphen, DE;
Knud Reuter, Krefeld, DE;
H.C. Starck GmbH, Goslar, DE;
Abstract
Methods of stabilizing thiophene derivatives of the general formula (I) by treatment with basic compounds: wherein Rand Reach independently represents a moiety selected from the group consisting of hydrogen, optionally substituted Calkyl groups which can contain up to 5 heteroatoms selected from the group consisting of oxygen and sulfur, optionally substituted Coxyalkyl groups which can contain up to 5 heteroatoms selected from the group consisting of oxygen and sulfur, or wherein Rand Rtogether represent a fused cyclic moiety selected from the group consisting of optionally substituted Cdioxyalkylene groups and Cdioxyarylene groups; and stabilized thiophene derivatives that can be prepared by such methods.