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. 19, 2005
Filed:
May. 21, 2003
Hideshi Katayama, Tokyo, JP;
Kan Saito, Tokyo, JP;
Shuetsu Ogasawara, Tokyo, JP;
Takao Hamada, Tokyo, JP;
Hideshi Katayama, Tokyo, JP;
Kan Saito, Tokyo, JP;
Shuetsu Ogasawara, Tokyo, JP;
Takao Hamada, Tokyo, JP;
Kawatetsu Mining Co., Ltd., Tokyo, JP;
Abstract
Provided is an ultrafine nickel powder suitable for a laminated ceramic capacitor electrode material. According to the ultrafine nickel powder, cracks and/or delamination are not liable to generate in the process for producing a ceramic capacitor, and its internal electrode can be made into a thinner layer, and the electric risistivity of the capacitor-can be made low. The ultrafine nickel powder has an average particle size of 0.1-1.0 μm, having the sulfur content of 0.02-1.0% by weight, and particles thereof being spherical, thereby exhibiting excellent properties. They can be produced by vapor phase hydrogen-reducing process using nickel chloride vapor.