Patents Assigned to Materials Modification, Inc.
  • Patent number: 8852558
    Abstract: 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: Grant
    Filed: December 16, 2008
    Date of Patent: October 7, 2014
    Assignee: Materials Modification, Inc.
    Inventors: Joseph G. Montes, Krishnaswamy Kasthuri Rangan, Ramachandran Radhakrishnan, Tirumalai Srinivas Sudarshan
  • Publication number: 20140287640
    Abstract: 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: Application
    Filed: March 14, 2014
    Publication date: September 25, 2014
    Applicant: Materials Modification Inc
    Inventors: Humcha Krishnamurthy Hariprakasha, Krishnaswamy Kasthuri Rangan, Tirumalai Srinivas Sudarshan
  • Publication number: 20140276484
    Abstract: 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: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: Materials Modification Inc
    Inventors: Kausik Mukhopadhyay, Krishnaswamy Kasthuri Rangan, Tirumalai Srinivas Sudarshan
  • Patent number: 8828358
    Abstract: 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: Grant
    Filed: March 11, 2008
    Date of Patent: September 9, 2014
    Assignee: Materials Modifications, Inc.
    Inventors: Joseph G. Montes, Krishnaswamy Kasthuri Rangan, Ramachandran Radhakrishnan, Tirumalai Srinivas Sudarshan
  • Patent number: 8790754
    Abstract: 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: Grant
    Filed: February 5, 2009
    Date of Patent: July 29, 2014
    Assignee: Materials Modification, Inc.
    Inventors: Krishnaswamy Kasthuri Rangan, Cheryl Renee Verdecchio, Ramachandran Radhakrishnan, Tirumalai Srinivas Sudarshan
  • Patent number: 7670623
    Abstract: 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: Grant
    Filed: May 31, 2002
    Date of Patent: March 2, 2010
    Assignee: Materials Modification, Inc.
    Inventors: Sanjay Kotha, Tirumalai S. Sudarshan
  • Patent number: 7560160
    Abstract: 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: Grant
    Filed: November 25, 2002
    Date of Patent: July 14, 2009
    Assignee: Materials Modification, Inc.
    Inventors: Tirumalai S. Sudarshan, Sanjay Kotha, Ramachandran Radhakrishnan
  • Patent number: 7448389
    Abstract: 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: Grant
    Filed: October 10, 2003
    Date of Patent: November 11, 2008
    Assignee: Materials Modification, Inc.
    Inventors: Sanjay Kotha, Tirumalai S. Sudarshan
  • Patent number: 7200956
    Abstract: 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: Grant
    Filed: July 23, 2003
    Date of Patent: April 10, 2007
    Assignee: Materials Modification, Inc.
    Inventors: Sanjay Kotha, Tirumalai S. Sudarshan
  • Patent number: 7007972
    Abstract: 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: Grant
    Filed: March 10, 2003
    Date of Patent: March 7, 2006
    Assignee: Materials Modification, Inc.
    Inventors: Ramachandran Radhakrishnan, Sanjay Kotha, Tirumalai S. Sudarshan
  • Patent number: 6982501
    Abstract: 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: Grant
    Filed: May 19, 2003
    Date of Patent: January 3, 2006
    Assignee: Materials Modification, Inc.
    Inventors: Sanjay Kotha, Tirumalai S. Sudarshan, Ramachandran Radhakrishnan
  • Publication number: 20030172772
    Abstract: 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: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Applicant: Materials Modification, Inc.
    Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman
  • Publication number: 20020112794
    Abstract: 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: Application
    Filed: April 4, 2002
    Publication date: August 22, 2002
    Applicant: Materials Modification, Inc.
    Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman
  • Patent number: 6309591
    Abstract: 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: Grant
    Filed: October 5, 1999
    Date of Patent: October 30, 2001
    Assignee: Materials Modification, Inc.
    Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
  • Patent number: 6270718
    Abstract: 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: Grant
    Filed: October 5, 1999
    Date of Patent: August 7, 2001
    Assignee: Materials Modification, Inc.
    Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
  • Patent number: 6187087
    Abstract: 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: Grant
    Filed: October 5, 1999
    Date of Patent: February 13, 2001
    Assignee: Materials Modification, Inc.
    Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
  • Patent number: 6183690
    Abstract: 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: Grant
    Filed: October 5, 1999
    Date of Patent: February 6, 2001
    Assignee: Materials Modification, Inc.
    Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
  • Patent number: 6001304
    Abstract: 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: Grant
    Filed: December 31, 1998
    Date of Patent: December 14, 1999
    Assignee: Materials Modification, Inc.
    Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
  • Patent number: 5989487
    Abstract: 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: Grant
    Filed: March 23, 1999
    Date of Patent: November 23, 1999
    Assignee: Materials Modification, Inc.
    Inventors: Sang H. Yoo, Krupashankara M. Sethuram, Tirumalai S. Sudarshan
  • Patent number: 5912399
    Abstract: 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: Grant
    Filed: November 14, 1996
    Date of Patent: June 15, 1999
    Assignee: Materials Modification Inc.
    Inventors: Chunzhe C. Yu, Reshma Kumar