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:
Sep. 06, 1977
Filed:
Jun. 16, 1975
Shigeru Matsuyama, Utsunomiya, JA;
Hiroshi Mikami, Imaichi, JA;
Aikoh Co., Ltd., Tokyo, JA;
Abstract
A process of manufacturing killed steel ingots of superior quality by forming the sound hot top portion and reducing the concentration of nonmetallic inclusion in the mushy zone of ingot bottom, characterized by arranging on the molten steel surface immediately after the pouring of the molten steel into a mold, a board-like molded heat-retaining material in which lining of a layer consisting of easily-flammable material is made to an exothermic, diabatic layer consisting of crushed flat charcoal, a refractory material expansible by heating and a binder.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile