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. 01, 1988
Filed:
Nov. 05, 1987
Applicant:
Inventor:
Akira Takahashi, Muroran, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
420129 ; 266265 ; 420 86 ;
Abstract
A method of producing a steel alloy containing lead or bismuth which includes fluorine molten lead or bismuth through a hollomed stopper rod positioned above a nozzle opening in the bottom of a vessel containing molten steel.