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. 18, 2006
Filed:
Feb. 03, 2005
Applicants:
Masaya Kitayama, Takarazuka, JP;
Hiroyuki Wakamori, Hikami-gun, JP;
Nobuhiro Yonetani, Nishinomiya, JP;
Inventors:
Masaya Kitayama, Takarazuka, JP;
Hiroyuki Wakamori, Hikami-gun, JP;
Nobuhiro Yonetani, Nishinomiya, JP;
Assignee:
Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 205/45 (2006.01); C07C 253/30 (2006.01); C07C 275/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a method for preparing a 2-hydroxy-6-ureidocarbonyl naphthalene derivative. The method comprises the step of reacting 2-hydroxy-6-aminocarbonyl naphthalene and a isocyanate in an organic solvent at a temperature of 90–200° C. According to the present invention, 2-hydroxy-6-ureidocarbonyl naphthalene derivative can easily be obtained within relatively short time and high yield.