Mulligan, Jr.; Francis J., Steen; Edward A. - US Patent Attorneys and Agents

Attorney: Mulligan, Jr.; Francis J., Steen; Edward A.

Number of patents: 31
Last date: May 11, 1993

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Number	Title	Issue Date
5209772	Dispersion strengthened alloy A dispersion-strengthened (DS) alloy, more particularly oxide-dispersion-strengthened (ODS) iron-based alloys which manifest resistant to oxidation at temperatures as high as 1300° C. (approx. 2400° F.) whereby the alloys are useful in the production of...	05/11/1993
5132080	Production of articles from powdered metals A process for producing porous articles from metal powders. A slurry including metal powders is deposited on a horizontally moving surface. The slurry/moving surface combination is passed through an evaporating zone, a calender zone and a sintering zone t...	07/21/1992
5125692	Dry pneumatic system for hard rock shaft drilling A dry, vertical shaft drilling system including an inverted raiseboring cutterhead fitted with air nozzles and vacuum pickups. Weights are detachably stacked above the cutterhead. Cuttings are extracted through the weights into a swivel circumscribing the...	06/30/1992
5120614	Corrosion resistant nickel-base alloy A nickel-chromium-molybdenum-niobium alloy affords high resistance to aggressive corrosives, including chlorides which cause crevice corrosion and oxidizing acids which promote intergranular corrosion, the alloy also being readily weldable and possessing ...	06/09/1992
5074993	Flotation process A method of flotation of sulfides wherein pyrrhotite is depressed by use of a water-soluble polyamine while non-ferrous metal-containing sulfide or sulfidized minerals are floated selectively....	12/24/1991
5074909	Gold and silver recovery method A process for recovering gold and silver from refractory ores containing precious metals locked in sulfide and arsenide minerals including roasting a concentrate of said sulfide and arsenide minerals with lime at a temperature of about 600° C. Thereafter...	12/24/1991
5024090	Loose rock detector A loose rock detector comprises an impact tool for hitting the rock face, sensors for detecting acoustic, rock motion and/or impact force signals generated by movement of the impact tool against the face of the rock, a data processor responsive to the sen...	06/18/1991
5019184	Corrosion-resistant nickel-chromium-molybdenum alloys A homogenizaton heat treatment for enhancing crevice and pitting corrosion resistance minimizes the formation of Mu phase in nickel-base alloys of high combined percentages of chromium, e.g., 19 to 23% and molybdenum, e.g., 14 to 17%, particularly togethe...	05/28/1991
5007525	Belt and chain flight conveyor A conveyor including a chain flight conveyor superimposed over an elastic belt conveyor. The juxtaposition of the two conveyors results in longer wear and less erosive friction when compared to sole chain flight systems....	04/16/1991
5007496	Automated underground haulage truck An underground unmanned, trackless mine haulage vehicle and a system for guiding such a vehicle which includes a roof mounted guide rail, physical means to detect and calculate in real time variation in angle and distance of the center line of the vehicle...	04/16/1991
5006163	Turbine blade superalloy II A novel, nickel-base, high temperature alloy body preferably containing about 20% chromium, 6 to 7% aluminum to provide phase, 1.5 to 2.5% molybdenum, 3 to 4.5% tungsten, additional strengthening elements and oxidic yttrium in finely dispersed form. The a...	04/09/1991
5002834	Oxidation resistant alloy Discloses a composite metal body having an oxide-dispersion-strengthened substrate made by mechanical alloying and a high chromium-aluminum nickel- or cobalt-base coating on the substrate. The substrate is characterized by containing an amount of aluminum...	03/26/1991
4998341	Method for making mineral insulated metal sheathed cables A method for making mineral insulated metal sheathed (MIMS) cable is disclosed. A tube of relatively large diameter is filled with at least one electrically conducting rod and an insulator. The resultant tubular assembly is sealed, hot rolled, reduced on ...	03/12/1991
4996115	Composite structure A composite structure and a method of producing said composite structure from a combination of copper and a low coefficient of thermal expansion nickel-iron alloy is disclosed wherein the copper clads the nickel-iron sheet and is interposed through the ce...	02/26/1991
4986234	Polymetallic piston-cylinder configuration for internal combustion engines A piston-cylinder combination for internal combustion engines made from a varying bonded combination of two or more alloys having dissimilar coefficients of thermal expansion. By regulating the volumetric percentages of the alloys vis-a-vis their location...	01/22/1991
4973909	System for the measurement of the concentration particulates in a flowing gas A system for estimating the burden of particulate levitated in a flow of gas which includes an upstream device for electrically charging the particulate, a downstream device for sensing the intensity of the field produced by the electrically charged parti...	11/27/1990
4969964	Heat treatment method for reducing polythionic acid stress corrosion cracking A heat treatment of alloy 617 generally including 732° C.-927° C. (1350° F.-1700° F.) for about one hour. The resultant discontinuous carbide network in the grain boundaries inhibits stress corrosion crack growth in polythionic acid environments....	11/13/1990
4962084	Production of oxidic superconductor precursors A process for producing an oxidic superconductor precursor alloy which comprises mechanicallly allowing metallic elemental constituents of the oxidic superconductor in stoichiometric proportions and in the presence of a process control agent non-detriment...	10/09/1990
4961563	Tundish for ingot pouring A tundish system for teeming an entire heat from a furnace into a mold. The tundish includes a plurality of chambers; one chamber including a nozzle. The chambers are arranged to interrupt the flow of the heat from one chamber to another thereby causing b...	10/09/1990
4961818	Process for producing single crystals A process for producing a single crystal object made of a nickel-base, O.D.S., gamma prime strengthened alloy which involves diffusion bonding a seed crystal to a mass of such alloy in recrystallizable state and thereafter zone annealing to grow a single ...	10/09/1990
4962085	Production of oxidic superconductors by zone oxidation of a precursor alloy Discloses a process for producing oxidic superconductors having advantageously textured oxide structures which involves zone oxidizing elongated metallic precursors of the superconductors....	10/09/1990
4960459	Method for surface activation of water atomized powders by pickling A method for pickling and consolidating water atomized metallic powders to reduce surface oxides. The technique includes introducing the powder into an acid bath--preferably nitric acid and hydrofluoric acid, rinsing the powder, introducing the powder int...	10/02/1990
4956026	Coated article having a base of age-hardened metal A structure comprising a base of an age-hardened alloy having on at least part of the surface thereof a layer of precious metal. The precious metal, e.g. gold, contains amounts of nickel grading downwardly from the inner surface of the precious metal laye...	09/11/1990
4944325	Butterfly valve for erosive fluid streams A butterfly valve having a central cavity larger than the access ports. A disc is disposed within the central cavity to sealingly engage the interior of the valve. A molded elastomeric liner covers the interior of the valve and the disc. By utilizing a ce...	07/31/1990
4940882	Welding flux and welding electrode A welding flux and welding electrode containing a copper-nickel core is described which results in very low porosity when used in the overhead welding position as well as all other welding positions....	07/10/1990
4936250	System for coating particles employing a pneumatic transport reactor A reactor/transporter apparatus for coating particles by thermally decomposing at least one metal carbonyl into selected metal values and carbon monoxide with the metal values depositing on the particles. The reactor/transporter includes an upper end, a l...	06/26/1990
4933141	Method for making a clad metal product A process for producing clad products that utilizes wrought or cast components eliminating the need for costly metal powders and a can to contain them. A sleeve circumscribes a core leaving a space therebetween. Powder is introduced into the space and is ...	06/12/1990
4926792	Apparatus and process for coloring objects by plasma coating A technique for presenting and fixturing small items that are coated by vapor deposition techniques. The objects are caused to be moved within the plasma stream to effect full coverage. The coating, if titanium nitride, is gold colored and is, for example...	05/22/1990
4887773	Rotary mill with charging system A rotary-type mill is provided with a system for charging powder to a mill under seal from atmospheric air, the system being comprised of a sealable loading conduit and a valve assembly. The valve assembly, which controls the opening to the mill, is dispo...	12/19/1989
4882125	Sulfidation/oxidation resistant alloys Nickel-base, high chromium alloys characterized by good sulfidation and oxidation resistance consisting essentially of about 27 to 35% chromium, about 2.5 to 5% aluminum, about 2.5 to about 6% iron, 0.5 to 2.5% columbium, up to 0.1% carbon, up to 1% each ...	11/21/1989
4877435	Mechanically alloyed nickel-cobalt-chromium-iron composition of matter and glass fiber method and apparatus for using same A mechanically alloyed composition of matter or alloy containing 30-40% chromium, 5-25% cobalt, 0.5-10% iron, 0.2-0.6% aluminum, 0.3-1.2% titanium, up to 0.15% carbon, about 0.2-1% yttria, up to about 0.3% nitrogen, the % titanium being at least about 1.4...	10/31/1989

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Attorney: Mulligan, Jr.; Francis J., Steen; Edward A.