Coated Metal Strip U.S. Patent 5,489,490. Feb. 6, 1996 J.F: Carey and M. Zamanzadeh, assignors to The Louis Berkman Co., Sfeubenville, Ohio

A coated metal strip including a base strip of steel or copper with parallel sur- faces both of which are coated with a highly corrosive-resistant, homogeneous, two-phase, tin-zinc alloy with tin being the primary constituent and zinc forming one of the two phases, said coating being ap- plied by continuously passing the continu- ous metal strip through a bath of molten tin-zinc alloy.

Spraying Apparatus U.S. Patent 5,490,633. Feb. 13, 1996 A. Jeffres et a/., assignors to imperial Chemical Industries PLC, London

A ligament mode electrostatic spraying device comprising a nozzle of pointed con- figuration defining a tip portion, the tip portion having an orifice; means for sup- plying liquid having a resistivity less than about 1 x IO7 Ohm-cm to the nozzle so as to be discharged through the orifice; means for applying a high electrical potential to

the liquid; and potential gradient attenuat- ing means encircling the orifice, whereby the potential gradient in the immediate vi- cinity of the nozzle tip is attenuated and the liquid discharging from the orifice under- goes necking to form a ligament having a cross-sectional diameter substantially smaller than the dimension of the orifice.

Coated Abrasive U.S. Patent 5,490,878. Feb. 13, 1996 J.S. Peterson and D.L. Osefh, assignors to 3M Co., St. Paul, Minn.

A method of making a coated abrasive article comprising providing a porous backing having a front side and a back side and an interstitial area therebetween, said backing having a porosity sufficient to al- low 100 cubic centimeters of air to pass therethrough in less than 100 set; applying a radiation-curable make coat precursor to the front side of the backing; applying a multiplicity of abrasive grits into the make coat precursor; exposing to a source of radiation energy whereby the make coat precursor seals the backing and serves to bond the abrasive grits to the backing: ap-

plying a size coat precursor over the abra- sive grits; and completely curing the make coat and the size coat precursors.

Descaling Stainless Steel U.S. Patent 5,490,908. Feb. 13, 1996 Y-U. Kim et al, assignors to Allegheny Ludlum Corp., Pittsburgh

A method of processing cold-rolled stainless steel in the form of a strip or a sheet, comprising cleaning with a solution selected from the group consisting of water and an aqueous solution of alkaline and acid-based compounds in amounts suffi- cient to reduce oxide scale formation and to provide a more uniform scale thickness during subsequent annealing, thereafter subjecting the stainless steel to transverse- flux electrical-induction heating; and elec- trolytically descaling by subjecting to an electrolyte of an aqueous solution of at least one neutral salt from the group con- sisting essentially of chloride, sulfate, and nitrate of an alkali metal or ammonium maintained at a temperature in excess of 150°F and with a current density of 0.1 to 1 .O A/in*.

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