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. 21, 2008
Filed:
Nov. 02, 2004
Masafumi Kobayashi, Shibukawa, JP;
Osamu Omae, Shibukawa, JP;
Kimitaka Ohkubo, Shibukawa, JP;
Yuan Gao, Shibukawa, JP;
Masafumi Kobayashi, Shibukawa, JP;
Osamu Omae, Shibukawa, JP;
Kimitaka Ohkubo, Shibukawa, JP;
Yuan Gao, Shibukawa, JP;
Kanto Denta Kogyo Co., Ltd., Tokyo, JP;
Abstract
Fluorinated pentacene derivatives, for example, the novel compounds tetradecafluoropentacene, 5,6,7,12,13,14-hexafluoropentacene, 5,7,12,14-tetrafluoropentacene, and 6,13-difluoropentacene, and intermediates therefor are provided. And a method of producing fluorinated pentacene derivatives and intermediates therefor is also provided. Pentacene derivatives fluorinated at desired positions of the pentacene skeleton are obtained by introducing the oxo group, hydroxyl group, or alkoxyl group into the pentacene skeleton followed by fluorination with sulfur tetrafluoride and partial defluorination using a reducing agent.