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:
Apr. 12, 2005
Filed:
Jan. 08, 2003
Michiya Fujiki, Kanagawa, JP;
Hiroshi Nakashima, Kanagawa, JP;
Julian R. Koe, Kanagawa, JP;
Masao Morita, Kanagawa, JP;
Hiromi Tamoto, Kanagawa, JP;
Michiya Fujiki, Kanagawa, JP;
Hiroshi Nakashima, Kanagawa, JP;
Julian R. Koe, Kanagawa, JP;
Masao Morita, Kanagawa, JP;
Hiromi Tamoto, Kanagawa, JP;
Japan Science and Technology, Saitama, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
Novel polythiophenes which exhibit strong main chain absorption in the ultraviolet to visible region, show optical activity depending on the polymeric chain alone, and comprise as repeating units thiophene rings containing chiral substituent groups, and are represented by the following general formula:(wherein Rand Rare the same or different, each representing a hydrogen atom or an organic group, of which at least one is an enantiopure alkyl group with a branch structure at the β-position, and n represents the number of repeating units selected from 10 to 100,000).