Patents Assigned to Materials Modification, Inc.
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Patent number: 8852558Abstract: A composition for in situ formation and/or expansion of a polymer-based hemostatic agent to control bleeding includes a suitable amount of a polymer or polymer-forming component, hydrogen peroxide or chemical(s) capable of forming hydrogen peroxide, or a combination of both, and a decomposing agent for hydrogen peroxide. The decomposing agent includes an endogenously or exogenously supplied catalyst (other than catalase), or both, and/or the polymer or polymer-forming component.Type: GrantFiled: December 16, 2008Date of Patent: October 7, 2014Assignee: Materials Modification, Inc.Inventors: Joseph G. Montes, Krishnaswamy Kasthuri Rangan, Ramachandran Radhakrishnan, Tirumalai Srinivas Sudarshan
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Publication number: 20140287640Abstract: Disclosure of functionalized ionic liquids. Use of disclosed ionic liquids as solvent for carbon dioxide. Use of disclosed ionic liquids as flame retardant. Use of disclosed ionic liquids for coating fabric to obtain flame retardant fabric.Type: ApplicationFiled: March 14, 2014Publication date: September 25, 2014Applicant: Materials Modification IncInventors: Humcha Krishnamurthy Hariprakasha, Krishnaswamy Kasthuri Rangan, Tirumalai Srinivas Sudarshan
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Publication number: 20140276484Abstract: Clay composite sheets, mats, films or membranes without polymers. Methods of preparing clay composite sheets, mats, films or membranes without using polymers in the method. Methods of using clay composite sheets, mats, films or membranes prepared without using polymers. Antimicrobial dressing having organo-modified clay product. Transdermal delivery of drugs using organo-modified clay product and methods.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Materials Modification IncInventors: Kausik Mukhopadhyay, Krishnaswamy Kasthuri Rangan, Tirumalai Srinivas Sudarshan
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Patent number: 8828358Abstract: A composition for in situ formation of an artificial blockage to control bleeding includes a suitable amount of a polymer-forming component, a suitable amount of a crosslinking agent, hydrogen peroxide, and a decomposing agent for hydrogen peroxide. The decomposing agent includes exogenous or endogenous catalase, or both.Type: GrantFiled: March 11, 2008Date of Patent: September 9, 2014Assignee: Materials Modifications, Inc.Inventors: Joseph G. Montes, Krishnaswamy Kasthuri Rangan, Ramachandran Radhakrishnan, Tirumalai Srinivas Sudarshan
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Patent number: 8790754Abstract: A method of preparing a metal nitride and/or metal oxynitride particulate material includes heating a stoichiometric mixture of a metal compound and urea at a temperature of about 400-1000° C. for a predetermined time period in the presence of argon, nitrogen, or both. The particulate material produced includes nanoparticles, nanotubes, microparticles, powder, or a combination thereof.Type: GrantFiled: February 5, 2009Date of Patent: July 29, 2014Assignee: Materials Modification, Inc.Inventors: Krishnaswamy Kasthuri Rangan, Cheryl Renee Verdecchio, Ramachandran Radhakrishnan, Tirumalai Srinivas Sudarshan
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Patent number: 7670623Abstract: A hemostatic composition includes a carrier medium including a predetermined amount of a particulate material. The particulate material is comprised of core particles with a coating. The core particles have an average particle size of about 5 nm to 10 ?m, and the coating is one of gold, silica, silver, platinum, steel, cobalt, carbon, a polymer, or a combination thereof.Type: GrantFiled: May 31, 2002Date of Patent: March 2, 2010Assignee: Materials Modification, Inc.Inventors: Sanjay Kotha, Tirumalai S. Sudarshan
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Patent number: 7560160Abstract: A multifunctional particulate material, fluid, or composition includes a predetermined amount of core particles with a plurality of coatings. The core particles have an average particle size of about 1 nm to 500 ?m. The particulate material, fluid, or composition is capable of exhibiting one or more properties, such as magnetic, thermal, optical, electrical, biological, chemical, lubrication, and rheological.Type: GrantFiled: November 25, 2002Date of Patent: July 14, 2009Assignee: Materials Modification, Inc.Inventors: Tirumalai S. Sudarshan, Sanjay Kotha, Ramachandran Radhakrishnan
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Patent number: 7448389Abstract: A method and kit for inducing hypoxia in tumors includes impeding oxygen supply to non-hypoxic cells in a subject in need thereof by using a magnetic fluid.Type: GrantFiled: October 10, 2003Date of Patent: November 11, 2008Assignee: Materials Modification, Inc.Inventors: Sanjay Kotha, Tirumalai S. Sudarshan
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Patent number: 7200956Abstract: A cushioning device for a footwear or shoe includes a chamber with a magnetically responsive fluid therein for absorbing and/or dampening vibrations and/or shocks. A magnetic member, such as an electromagnet, is provided for applying a magnetic field to the magnetic fluid to thereby vary the viscosity thereof.Type: GrantFiled: July 23, 2003Date of Patent: April 10, 2007Assignee: Materials Modification, Inc.Inventors: Sanjay Kotha, Tirumalai S. Sudarshan
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Patent number: 7007972Abstract: An airbag inflation apparatus includes a chamber for generating a gas to inflate an airbag. A valve, including a magnetic fluid and a source of magnetic field, preferably an electromagnet, is associated with the chamber for regulating the flow of the gas into the airbag. A sensor determines and feeds occupant information to the sensor.Type: GrantFiled: March 10, 2003Date of Patent: March 7, 2006Assignee: Materials Modification, Inc.Inventors: Ramachandran Radhakrishnan, Sanjay Kotha, Tirumalai S. Sudarshan
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Patent number: 6982501Abstract: A device for generating power includes a fluid including magnetic particles. A source magnetizes the fluid thereby inducing rotations in the magnetic particles for creating a magnetic flux. The rotations of the magnetic particles induce an electromagnetic force in a coil associated with the fluid.Type: GrantFiled: May 19, 2003Date of Patent: January 3, 2006Assignee: Materials Modification, Inc.Inventors: Sanjay Kotha, Tirumalai S. Sudarshan, Ramachandran Radhakrishnan
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Publication number: 20030172772Abstract: The present invention relates to the production of ultrafine powders using a microwave plasma apparatus and chemical synthesis technique. Microwaves generated by a magnetron (1) are passed through waveguides (2) before they arrive at the head of a plasmatron (3). These high energy microwaves ionize a plasma gas, thus releasing large amounts of energy. The energy thus released is utilized to initiate and sustain chemical reactions between the desired elements being pumped in a spiral pattern into the plasmatron (3). The reaction products are quenched rapidly in a reactor column (4) into ultrafine powders.Type: ApplicationFiled: March 11, 2003Publication date: September 18, 2003Applicant: Materials Modification, Inc.Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman
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Publication number: 20020112794Abstract: The present invention relates to the production of ultrafine powders using a microwave plasma apparatus and chemical synthesis technique. Microwaves generated by a magnetron (1) are passed through waveguides (2) before they arrive at the head of a plasmatron (3). These high energy microwaves ionize a plasma gas, thus releasing large amounts of energy. The energy thus released is utilized to initiate and sustain chemical reactions between the desired elements being pumped in a spiral pattern into the plasmatron (3). The reaction products are quenched rapidly in a reactor column (4) into ultrafine powders.Type: ApplicationFiled: April 4, 2002Publication date: August 22, 2002Applicant: Materials Modification, Inc.Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman
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Patent number: 6309591Abstract: An apparatus for bonding a particle material to near theoretical density, includes a chamber, a punch and die assembly for supporting a particle material, plungers for applying shear and/or axial pressures, and a power supply for applying a current. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps. is applied. The apparatus may be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material.Type: GrantFiled: October 5, 1999Date of Patent: October 30, 2001Assignee: Materials Modification, Inc.Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
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Patent number: 6270718Abstract: A method of bonding a particle material to near theoretical density, includes placing a particle material in a die. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps. is applied. The method can be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material. The method may also be applied to perform combustion synthesis of a reactive material, followed by consolidation or joining to near-net shaped articles or parts.Type: GrantFiled: October 5, 1999Date of Patent: August 7, 2001Assignee: Materials Modification, Inc.Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
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Patent number: 6187087Abstract: A method of bonding a particle material to near theoretical density, includes placing a particle material in a die. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps. is applied. The method can be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material. The method may also be applied to perform combustion synthesis of a reactive material, followed by consolidation or joining to near-net shaped articles or parts.Type: GrantFiled: October 5, 1999Date of Patent: February 13, 2001Assignee: Materials Modification, Inc.Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
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Patent number: 6183690Abstract: A method of bonding a particle material to near theoretical density, includes placing a particle material in a die. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps. is applied. The method can be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material. The method may also be applied to perform combustion synthesis of a reactive material, followed by consolidation or joining to near-net shaped articles or parts.Type: GrantFiled: October 5, 1999Date of Patent: February 6, 2001Assignee: Materials Modification, Inc.Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
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Patent number: 6001304Abstract: A method of bonding a particle material to near theoretical density, includes placing a particle material in a die. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps, is applied. The method can be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material. The method may also be applied to perform combustion synthesis of a reactive material, followed by consolidation or joining to near-net shaped articles or parts.Type: GrantFiled: December 31, 1998Date of Patent: December 14, 1999Assignee: Materials Modification, Inc.Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
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Patent number: 5989487Abstract: An apparatus for bonding a particle material to near theoretical density, includes a chamber, a punch and die assembly for supporting a particle material, plungers for applying shear and/or axial pressures, and a power supply for applying a current. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps. is applied. The apparatus may be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material.Type: GrantFiled: March 23, 1999Date of Patent: November 23, 1999Assignee: Materials Modification, Inc.Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
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Patent number: 5912399Abstract: A new tungsten compound is formed by reacting ammonium metatungstate with guanidine carbonate. Such a compound can be converted to metallic tungsten, tungsten carbide or oxycarbide, and tungsten nitride or oxynitride. One can also make multiphase composite particles based on molybdenum, tungsten or their compounds (such as carbide or nitride), and at least one other metallic phase, such as cobalt, copper, nickel, iron or silver. The process involves first dispersing particles of a refractory metal or its compounds in a liquid medium, followed by inducing a chemical reaction in the liquid phase to generate a new solid phase which coats or mixes with the dispersed particles. The solid phase includes elements required in the final composite. After removing the liquid phase, the remaining solid is converted by hydrogen reduction into the final products.Type: GrantFiled: November 14, 1996Date of Patent: June 15, 1999Assignee: Materials Modification Inc.Inventors: Chunzhe C. Yu, Reshma Kumar