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:
Mar. 31, 2015
Filed:
Sep. 12, 2012
Applicants:
Masaru Kuwahara, Hillsboro, OR (US);
Koichi Misumi, Hillsboro, OR (US);
Hidenori Miyamoto, Hillsboro, OR (US);
Inventors:
Masaru Kuwahara, Hillsboro, OR (US);
Koichi Misumi, Hillsboro, OR (US);
Hidenori Miyamoto, Hillsboro, OR (US);
Assignee:
Tokyo Ohka Kogyo Co., Ltd., Kawasaki-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 3/12 (2006.01); C01B 21/092 (2006.01); C01B 19/00 (2006.01);
U.S. Cl.
CPC ...
C01B 21/092 (2013.01); C01G 3/12 (2013.01); C01B 19/002 (2013.01);
Abstract
A method of producing a hydrazine-coordinated Cu chalcogenide complex, including: a step (I) in which Cu or CuSe and a chalcogen are reacted in dimethylsulfoxide in the presence of hydrazine, a step (II) in which a solution obtained in the step (I) is subjected to concentration and filtration, and a step (III) in which a purifying solvent is added to a solution obtained in the step (II).