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:
Feb. 22, 2005
Filed:
Jun. 29, 2001
Applicants:
Katsumi Abe, Ibaraki, JP;
Tomonori Nishimura, Ibaraki, JP;
Takanobu Watanabe, Ibaraki, JP;
Susumu Suzuka, Ibaraki, JP;
Inventors:
Katsumi Abe, Ibaraki, JP;
Tomonori Nishimura, Ibaraki, JP;
Takanobu Watanabe, Ibaraki, JP;
Susumu Suzuka, Ibaraki, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01B001/12 ;
U.S. Cl.
CPC ...
Abstract
A method for purifying an electronic item material, which comprises dissolving an electronic item material or its intermediate product in an organic solvent and having the solution contacted with activated clay at a temperature of 65° C. to 200° C.