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:
May. 08, 2007
Filed:
Sep. 26, 2003
Tetsuo Kusumoto, Ageo, JP;
Yutaka Nagashima, Saitama, JP;
Sadao Takehara, Sakura, JP;
Takashi Matsumoto, Saitama, JP;
Tetsuo Kusumoto, Ageo, JP;
Yutaka Nagashima, Saitama, JP;
Sadao Takehara, Sakura, JP;
Takashi Matsumoto, Saitama, JP;
Dainippon Ink & Chemicals, Inc., Tokyo, JP;
Abstract
The present invention provides 1,7,8-trifluoro-2-naphthol and a derivative thereof as intermediates for efficiently producing a trifluoronaphthalene liquid crystal material. A method for efficiently producing a trifluoronaphthalene liquid crystal material using such intermediates is also disclosed. A naphthol derivative having the following general formula (I) is disclosed. A method for producing a trifluoronaphthalene compound having the following general formula (IV), (VI) or (VIII) using the naphthol derivative as a raw material is also disclosed