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:
Jan. 25, 2005
Filed:
Mar. 11, 2003
Applicant:
Keisuke Ban, Nagano-ken, JP;
Inventor:
Keisuke Ban, Nagano-ken, JP;
Assignee:
Nissin Kogyo Co., Ltd., Nagano-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 2700 ; B22D 2718 ; B22C 300 ;
U.S. Cl.
CPC ...
Abstract
A reduction casting method includes the steps of: allowing a metallic gas and a reactive gas to react with each other to generate a reducing compound; introducing the thus-generated reducing compound into a cavity of a molding die 11; and reducing an oxide film formed on a surface of a molten metal by the reducing compound to cast a cast product. The reduction casting method uses a non-reactive gas as a carrier gas when the metallic gas is introduced into the cavity, in which a flow quantity of the non-reactive gas is allowed to be from one sixth to twice that of the reactive gas.