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Inventor: Der-Shyang Cheng


Address: Kaohsiung Hsien, TW
No. of patents: 1
Last patent issue date: 04/16/1991

NumberTitleIssue Date
5007958Lime-based injection powder for steel-refining
A lime-based injection powder for use in steel-refining, having excellent waterproofing and desulphurization effects, consists of (a) more than 65% by weight of calcium oxide, (b) less than 30% by weight of fluorite, and 5-10% by weight of Al powder, 5%-7...
04/16/1991
 
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