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Class Information
Number: 420/88
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability > Processes of making or treating alloy containing over 0.04 percent phosphorus
Description: Processes wherein an alloy containing over 0.04 Percent phosphorus is made or treated.










Patents under this class:

Patent Number Title Of Patent Date Issued
8691141 Low carbon resulfurized free cutting steel Apr. 8, 2014
8529712 Tough iron-based bulk metallic glass alloys Sep. 10, 2013
8052925 Low carbon resulfurized free-machining steel having high machinability Nov. 8, 2011
7488396 Superior in machinability and method of production of same Feb. 10, 2009
6893608 Steel for plastic molds and process for their heat treatment May. 17, 2005
6858101 Steel excellent in forgeability and machinability Feb. 22, 2005
6649125 Free-cutting steel Nov. 18, 2003
5690755 Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet having excellent bake hardenability, non-aging properties at room temperature and good formability and process for produc Nov. 25, 1997
5362440 Ferrophosphorus refining process Nov. 8, 1994
4978499 Soft steel for machine cutting and method of producing it Dec. 18, 1990
4806304 Free cutting steel Feb. 21, 1989
4662953 Creep resistant cold-rolled and annealed steel sheet and strip May. 5, 1987
4529439 Energy conservation during the smelting of ores Jul. 16, 1985
4201576 Method for refining ferrophosphorus for use in the production of phosphorus-containing steel May. 6, 1980
4152138 Method for separating a mixture of molten oxidized ferrophosphorus and refined ferrophosphorus May. 1, 1979
4135916 Process in the manufacture of steels containing nickel Jan. 23, 1979
4014686 Deoxidation of open type steels for improved formability Mar. 29, 1977
3998631 Oxidation of molten ferrophosphorous Dec. 21, 1976











 
 
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