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. 05, 1988
Filed:
Mar. 17, 1987
Masahisa Tate, Yokohama, JP;
Makoto Watanabe, Tokyo, JP;
Hideaki Nishio, Okayama, JP;
Junji Onmyoji, Oku, JP;
Eiji Yokogi, Bizen, JP;
Hiroaki Shimizu, Bizen, JP;
Kuniaki Miyamaoto, Bizen, JP;
Koichiro Kishita, Wake, JP;
Masakatsu Tsutsui, Himeji, JP;
Toshin Steel Co., Ltd., Tokyo, JP;
Shinagawa Refractories Co., Ltd., Tokyo, JP;
Abstract
A plug comprises a refractory body having a plurality of gas passgeways through which gas is blown into a refining apparatus. Each gas passageway may be defined by at least two metal tubes which are longitudinally spaced apart from each other. Alternatively, each gas passageway may be at least partly defined by an electrically insulating tube. The plug may alternatively have a plurality of gas passageways each having a bare refractory wall, while the body is reinforced with nonconductive mineral fibers, or metal wires which do not continuously extend throughout the plug. The plug may further be provided with a plurality of elongated holes extending in parallel to the gas passgeways from the inner surface of the body facing the interior of the refining apparatus to an intermediate portion thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile