Patents by Inventor James M. Lucas
James M. Lucas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240093663Abstract: A DC power plant generating DC power from a variety of engines including a Stirling cycle engine. The DC power plant includes a relatively small start-up power source that is discontinued after the engine is running. A method for producing DC power for a load including starting up an engine using power supplied by a relatively small power supply supplemented by a capacitor bank, providing output from the engine to a generator, producing alternating current (AC) power by the generator, converting the AC power to direct current (DC) power, disabling output of the DC power during a first set of pre-selected conditions, limiting a rate of change of current of the DC power during a second set of pre-selected conditions, reducing conducted and radiated emissions of the DC power, disconnecting the DC power from the load under a third set of pre-selected conditions, and providing the DC power to the load.Type: ApplicationFiled: November 20, 2023Publication date: March 21, 2024Inventors: Andrew A. Schnellinger, James R. Lowell, Bryan A. Finseth, Christopher L. Barber, Jason M. Sachs, Donald J. Lucas, Shannon Prescott, Jeffrey W. Kite, Andras K. Fekete, Douglas R. Adams
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Patent number: 11927431Abstract: A capacitive discharge unit (CDU) for detonating an explosive in response to a control signal comprises a set of CDU components, including an exploding foil initiator (EFI), a trigger circuit, a firing capacitor, and an insulated-gate bipolar transistor (IGBT) firing switch. In various embodiments the components are arranged on a board for mechanically and electrically supporting the components in an ordered arrangement along a CDU axis where the CDU having an axial length defined by the ordered arrangement of two or more of the EFI, the firing capacitor, and the IBGT firing switch, wherein the trigger circuit is offset from the CDU axis such that the trigger circuit does not contribute to the axial length.Type: GrantFiled: December 10, 2019Date of Patent: March 12, 2024Assignee: Northrop Grumman Systems CorporationInventors: James D. Lucas, Eric M. McDonough
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Patent number: 4547299Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, by utilization of a copolymer of: (1) a (meth) acrylamido alkyl sulfonic acid or alkali metal salt thereof; and (2) N, N-dialkyl (meth) acrylamide. The copolymer may be cross-linked with N,N'-methylenebisacrylamide or other appropriate cross-linking agent.Type: GrantFiled: March 15, 1984Date of Patent: October 15, 1985Assignee: Milchem IncorporatedInventor: James M. Lucas
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Patent number: 4383988Abstract: A clear viscous and gelled antiperspirant solution comprising a gell solution of an alcoholic solvent and a gelling agent for the solvent, an antiperspirant dissolved in the gel solution, and a small but effective amount of emollient. The gelled antiperspirant can be applied easily. The antiperspirant is held effectively within the smooth film formed by the gelling agent. The gelling agent is a cellulose-based derivative modified with polyoxypropylene groups and substituted with acetyl groups.Type: GrantFiled: December 13, 1979Date of Patent: May 17, 1983Assignee: Anheuser-Busch, IncorporatedInventors: James Teng, James M. Lucas
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Patent number: 4309329Abstract: The invention relates to an aqueous solution of a filtration control agent for utilization in said aqueous drilling fluid, useful in a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, which is effective at high temperatures and pressures, the terpolymer consisting essentially of: (1) an alkali metal acrylate units; (2) hydroxyalkyl acrylate units; and (3) acrylamide.Type: GrantFiled: March 18, 1980Date of Patent: January 5, 1982Assignee: Milchem IncorporatedInventors: James M. Lucas, Alphonse C. Perricone, Dorothy P. Enright
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Patent number: 4293427Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, by utilization of a copolymer of: (1) a (meth) acrylamido alkyl sulfonic acid or alkali metal salt thereof; and (2) a (meth) acrylamide or N-alkyl (meth) acrylamide. The copolymer may be cross-linked with a quaternary ammonium salt cross-linking agent.Type: GrantFiled: March 18, 1980Date of Patent: October 6, 1981Assignee: Milchem IncorporatedInventors: James M. Lucas, Dorothy P. Enright, Alphonse C. Perricone
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Patent number: 4288582Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, which are effective at high temperatures and pressures, by utilization of a terpolymer of: (1) a monovalent alkali metal salt of acrylic acid; (2) an hydroxy alkyl acrylate; and (3) acrylamide.Type: GrantFiled: October 29, 1979Date of Patent: September 8, 1981Assignee: Milchem IncorporatedInventors: James M. Lucas, Alphonse C. Perricone, Dorothy P. Enright
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Patent number: 4283517Abstract: A continuous process is provided for producing substantially homogeneous, non-tacky solid terpolymers of acrylamide, an alkali metal salt of acrylic acid and a hydroxyalkyl acrylate, and copolymers, optionally cross-linked, of a (meth)acrylamidoalkylsulfonic acid or alkali metal salt thereof and (meth)acrylamide or N-alkyl(meth)acrylamide, by rapidly heating a single phase high solids aqueous solution of the monomers to polymerization initiation temperature immediately prior to depositing a uniform layer of the solution and, at the same time, a solution of a polymerization initiator, onto a moving surface, the surface and the reaction mixture only being heated if necessary to keep the temperature of the polymerizing mixing from dropping substantially below the polymerization initiation temperature.Type: GrantFiled: July 16, 1979Date of Patent: August 11, 1981Assignee: Milchem IncorporatedInventors: Alphonse C. Perricone, James M. Lucas
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Patent number: 4268400Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, which are effective at high temperatures and pressures, by utilization of a terpolymer of: (1) a monovalent alkali metal salt of acrylic acid; (2) an hydroxy alkyl acrylate; and (3) acrylamide.Type: GrantFiled: March 18, 1980Date of Patent: May 19, 1981Assignee: Milchem IncorporatedInventors: James M. Lucas, Alphonse C. Perricone, Dorothy P. Enright
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Patent number: 4193989Abstract: A water-resistant suntan gel comprising an alcoholic solvent, a sunscreen agent, emollients, a selected acid which enhances the binding ability of the gel film to the skin and a gelling agent for the solvent. The composition prevents sun damage to the skin and promotes an even tan. The composition forms a film on the skin, which film is water insoluble yet easily removable.Type: GrantFiled: September 27, 1976Date of Patent: March 18, 1980Assignee: Anheuser-Busch, IncorporatedInventors: James Teng, James M. Lucas, Marcella C. Stubits
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Patent number: 4183764Abstract: An overprint lacquer comprising a solvent, a resin, a plasticizer, and a gelling agent. The gelling agent is hydroxypropylcellulose acetate. The coatings of this gel-containing lacquer show improved adhesive characteristics and improved durability when compared with conventional overprint lacquers that have higher nitrocellulose content. Also, the viscosity of the lacquer is more readily controllable due to the presence of the gelling agent.Type: GrantFiled: September 1, 1977Date of Patent: January 15, 1980Assignee: Anheuser-Busch, IncorporatedInventors: James M. Lucas, James Teng