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. 17, 2007
Filed:
Mar. 25, 2003
Akihiko Ikegawa, Kanagawa, JP;
Masuji Motoki, Kanagawa, JP;
Katsuyoshi Yamakawa, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
The invention is a method for producing δ-aminopentadienoate derivatives of formula (1), the method comprising reacting a streptocyanine derivative of formula (2) with an ester derivative of formula (3) in the presence of an organic base. In formulae (1) to (3), Rrepresents an alkyl group or an aryl group; R, R, Rand Rindependently represent a hydrogen atom or an alkyl group; Rand R, or Rand Rmay bond to each other to form a ring; Y represents an electron attractive group; X represents an acid radical; n indicates 0 or a positive number, which is no more than 5; Y may bond to Rto form a ring
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile