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Remus A Lula: Corrosion resistant tube assembly. Allegheny Ludlum Steel Corporation, Patrick J Viccaro, January 4, 1983: US04366971 (133 worldwide citation)

A corrosion resistant tube assembly is disclosed comprising a corrosion susceptible metal tubing having an outside surface, an inside surface and end surfaces. Peripheral end portions of the tubing are provided with an overlay of corrosion resistant metal extending along a portion of the outside sur ...


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Remus A Lula, George Aggen: Ferritic stainless steel substrate for catalytic system. Allegheny Ludlum Steel Corporation, Vincent G Gioia, James C Valentine, July 7, 1981: US04277374 (14 worldwide citation)

A system comprising a ferritic stainless steel substrate having a tightly adherent oxide coating and a catalytic material thereupon. The ferritic stainless steel is of a chemistry which forms a tightly adherent non-spalling scale suitable for application of a catalytic bearing material. It consists ...


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Remus A Lula, Donald J McMahon: Strip electrode for overlay welding. Allegheny Ludlum, Vincent G Gioia, Robert F Dropkin, December 28, 1976: US04000373 (2 worldwide citation)

There is disclosed an electrode for overlay welding made up of laminations. All of the laminations are composited to be hot workable; and they may be austenitic stainless steel, ferritic stainless steel, duplex structures that are hot workable, or pure metals such as chromium. The combined compositi ...


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Jack M Beigay, Remus A Lula: Method for preventing weld fracture. Allegheny Ludlum Steel Corporation, Patrick J Viccaro, May 3, 1983: US04381660 (1 worldwide citation)

A method for preventing weld cracking of autogenous weldments of metastable stainless steel during deforming of the weld, as by stretching; this is achieved by cooling the weld with a pressurized CO.sub.2 spray during the deforming operation.


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