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:
Sep. 23, 2014
Filed:
Feb. 24, 2010
Katsuhiro Fujii, Hyogo, JP;
Suguru Hata, Hyogo, JP;
Kohta Fukui, Chiba, JP;
Hiroyuki Kato, Osaka, JP;
Yuki Numata, Hyogo, JP;
Katsuhiro Fujii, Hyogo, JP;
Suguru Hata, Hyogo, JP;
Kohta Fukui, Chiba, JP;
Hiroyuki Kato, Osaka, JP;
Yuki Numata, Hyogo, JP;
Taoka Chemical Co., Ltd., Osaka, JP;
Abstract
A method for producing a fluorene derivative by reacting fluorenone with a phenol or a phenoxyalcohol in the presence of an acid catalyst includes: adding an alkali to an obtained reaction liquid containing a fluorene derivative; and concentrating a resultant mixture liquid without removing the alkali thus added and a reaction product of the alkali, thereby separating an unreacted phenol or unreacted phenoxyalcohol.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile