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:
Dec. 31, 2002
Filed:
Jan. 23, 2001
Applicant:
Inventors:
Tsuyoshi Asai, Chigasaki, JP;
Hideo Takatori, Chigasaki, JP;
Assignee:
Toho Titanium Co., Ltd., Chigasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/00 ;
U.S. Cl.
CPC ...
B22F 1/00 ;
Abstract
In a process for production of ultrafine nickel powder, raw material gas having a partial pressure of nickel chloride vapor within a range from 0.2 to 0.7 is fed into a reducing furnace and the nickel chloride vapor is reduced with hydrogen while flowing the raw material gas in this reducing furnace at a space velocity (SV) within a range from 0.02 to 0.07 sec .