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:
Jul. 10, 2012
Filed:
May. 18, 2010
Mingqian He, Horseheads, NY (US);
Jieyu HU, Painted Post, NY (US);
James R. Matthews, Painted Post, NY (US);
Weijun Niu, Painted Post, NY (US);
Mingqian He, Horseheads, NY (US);
Jieyu Hu, Painted Post, NY (US);
James R. Matthews, Painted Post, NY (US);
Weijun Niu, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
β″-di-R-substituted fused thiophene (DCXFT4) compounds, and a method for making a compound of the formula (V): where each R is a Cto Chydrocarbylene, the method including di-acylating tetra-bromo dithiophene (I); contacting the bromo-dithiophene compound (II) with a 2-mercaptoacetate to form cyclized fused thiophene (III); converting fused thiophene (III) to the corresponding diacid (IV); and decarboxylating the diacid (IV) to the fused thiophene (V), of the formulas as defined herein.