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:
Nov. 09, 1999
Filed:
Feb. 07, 1997
Applicant:
Inventors:
Hiroji Tani, Nagaokakyo, JP;
Naoaki Ogata, Moriyama, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; C23C / ; H01B / ;
U.S. Cl.
CPC ...
428403 ; 428209 ; 428469 ; 148250 ; 252512 ; 75228 ;
Abstract
Copper powder has a coating made of copper phosphate at the outer surface thereof. The coating is formed by chemically reacting the outer surface of the copper powder and covers the entire surface of the copper powder uniformly, thereby obtaining excellent anti-oxidizing properties. It is preferable to set the copper phosphate ratio in term of phosphorus with respect to the total weight of the copper powder within the range of about 0.05 to 0.5 wt %.