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:
Mar. 27, 1984
Filed:
Jun. 02, 1982
Applicant:
Inventors:
Narito Kimura, Yokohama, JP;
Kiyomi Taguchi, Fukuyama, JP;
Masayuki Hammyo, Fukuyama, JP;
Osamu Terada, Fukuyama, JP;
Teruyuki Hasegawa, Fukuyama, JP;
Youichi Nimura, Fukuyama, JP;
Noriyuki Hiraga, Fukuyama, JP;
Assignee:
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
266217 ; 266224 ; 266265 ; 266270 ; 239556 ; 239D / ;
Abstract
A gas blowing nozzle is produced by molding a non-porous substance into a molding frame under pressure and at the same time positioning a plurality of gas passageways forming members at predetermined spaces and distances from each other. The passageway holes have cross sectional shapes as desired, so that the gas blowing may be accurately controlled to perform refining of molten metal.