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. 14, 1978
Filed:
Oct. 23, 1973
Walter Meichsner, Homberg, DT;
Heinrich Rock, Trostberg, DT;
Alfred Freissmuth, Trostberg, DT;
Horst Prietzel, Trostberg, DT;
Heinrich Rellermeyer, Duisburg-Hamborn, DT;
Wolfgang Ullrich, Rheinkamp-Baerl, DT;
Erich Pfluger, Trostberg, DT;
Raymund Sindermann, Tacherting, DT;
Suddeutsche Kalkstickstoff-Werke Aktiengesellschaft, Trostberg, DT;
Abstract
Molten metals, especially molten pig iron, are desulfurized by contacting them with a composition comprising calcium carbide or calcium cyanamide and an additive agent yielding water or hydrogen at the temperature of the molten metal; preferred as the additive agents are the alkali metal hydrides, polyethylene or polyamide for yielding hydrogen and hydrate of lime and alkaline earth borates for yielding water.