Patents by Inventor M. Ashraf Imam

M. Ashraf Imam 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).

  • Patent number: 9120679
    Abstract: This disclosure concerns a method of making silicon carbide involving adding agricultural husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC).
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: September 1, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Syed B Qadri, Arne W Fliflet, M Ashraf Imam, Bhakta B Rath, Edward P Gorzkowski, III
  • Publication number: 20140287907
    Abstract: This disclosure concerns a method of making silicon carbide involving adding agricultural husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC).
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Syed B. Qadri, Arne W. Fliflet, M. Ashraf Imam, Bhakta B. Rath, Edward P. Gorzkowski, III
  • Publication number: 20130272947
    Abstract: This disclosure concerns a method of making silicon carbide involving adding one from the group of rice husk material, sorghum, peanuts, maple leaves, and/or corn husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC).
    Type: Application
    Filed: March 8, 2013
    Publication date: October 17, 2013
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Syed B. Qadri, Arne W. Fliflet, M. Ashraf Imam, Bhakta B. Rath, Edward P. Gorzkowski, III
  • Patent number: 8431071
    Abstract: A method of sintering by: placing a compacted metal powder inside a cylindrically-shaped susceptor and in an inert atmosphere or a vacuum, and applying microwave or millimeter-wave energy to the powder until the powder is sintered.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: April 30, 2013
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: M Ashraf Imam, Arne W Fliflet
  • Publication number: 20120051962
    Abstract: A method of sintering by: placing a compacted metal powder inside a cylindrically-shaped susceptor and in an inert atmosphere or a vacuum, and applying microwave or millimeter-wave energy to the powder until the powder is sintered.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Applicant: THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventors: M. Ashraf Imam, Arne W. Fliflet
  • Patent number: 7824576
    Abstract: A composite material includes lithium hydride particles dispersed within lithium to form a lithium-lithium hydride composite. The lithium-lithium hydride composite has increased strength over pure lithium and similar soft X-ray transmission characteristics as pure lithium. A soft X-ray blast window may be made from the lithium-lithium hydride composite with increased reliability and cost effectiveness. A method for making a composite material includes dispersing lithium hydride into lithium metal using a variety of dispersion techniques.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: November 2, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Nino R Pereira, M Ashraf Imam
  • Publication number: 20100176348
    Abstract: A composite material includes lithium hydride particles dispersed within lithium to form a lithium-lithium hydride composite. The lithium-lithium hydride composite has increased strength over pure lithium and similar soft X-ray transmission characteristics as pure lithium. A soft X-ray blast window may be made from the lithium-lithium hydride composite with increased reliability and cost effectiveness. A method for making a composite material includes dispersing lithium hydride into lithium metal using a variety of dispersion techniques.
    Type: Application
    Filed: March 23, 2010
    Publication date: July 15, 2010
    Inventors: Nino R. Pereira, M. Ashraf Imam
  • Patent number: 7632565
    Abstract: Metal foams are impregnated with resins. The metal foam/polymer composite formed upon curing has excellent acoustic dampening and structural properties. Foams of various metals, such as aluminum, titanium, nickel, copper, iron, zinc, lead, silver, gold, platinum, tantalum, and alloys based on these metals, may be used. The polymer component may be any polymeric resin, for example, epoxy, natural rubber, acrylic, or phenolic.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: December 15, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: M. Ashraf Imam, Bhakta B. Rath, Teddy M. Keller
  • Patent number: 7381368
    Abstract: A palladium-boron composition and methods of making and using same are provided. In one aspect, the invention comprises an alloy comprising palladium and boron, the boron being in solid solution in the palladium and the alloy having a two-phase structure, wherein each phase of the two-phase structure has the same crystal structure as the other phase and has a different set of lattice parameters from the other phase such that the palladium is greatly hardened by the presence of the smaller phase crystals within the spaces between the larger phase crystals. The composition is carefully prepared by a process wherein palladium and an amount of boron sufficient to place the boron in solid solution, but insufficient to combine with the palladium, are placed together and repeatedly are melted, cooled and turned over until sufficiently mixed.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: June 3, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Melvin H. Miles, M. Ashraf Imam
  • Publication number: 20080093585
    Abstract: A composite material includes lithium hydride particles dispersed within lithium to form a lithium-lithium hydride composite. The lithium-lithium hydride composite has increased strength over pure lithium and similar soft X-ray transmission characteristics as pure lithium. A soft X-ray blast window may be made from the lithium-lithium hydride composite with increased reliability and cost effectiveness. A method for making a composite material includes dispersing lithium hydride into lithium metal using a variety of dispersion techniques.
    Type: Application
    Filed: October 23, 2006
    Publication date: April 24, 2008
    Inventors: Nino R. Pereira, M. Ashraf Imam
  • Patent number: 6764561
    Abstract: A palladium-boron composition and methods of making and using same are provided. In one aspect, the invention comprises an alloy comprising palladium and boron, the boron being in solid solution in the palladium and the alloy having a two-phase structure, wherein each phase of the two-phase structure has the same crystal structure as the other phase and has a different set of lattice parameters from the other phase such that the palladium is greatly hardened by the presence of the smaller phase crystals within the spaces between the larger phase crystals. The composition is carefully prepared by a process wherein palladium and an amount of boron sufficient to place the boron in solid solution, but insufficient to combine with the palladium, are placed together and repeatedly arc melted, cooled and turned over until sufficiently mixed.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 20, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Melvin H. Miles, M. Ashraf Imam
  • Patent number: 6700067
    Abstract: A high temperature superconducting composite rod, wire or tape is formed by filling the open cells of a reticulated foam structure made of silver, silver alloy, gold or gold alloy with a superconducting ceramic oxide or precursor, compacting the filled structure and forming it into a rod, wire or tape and heating it to melt and/or texture the superconducting ceramic oxide. The resulting composite has continuous ligaments of metal throughout a continuous region of superconducting ceramic oxide.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: March 2, 2004
    Assignee: The Secretary of the United States of America as represented by the Secretary of the Navy
    Inventors: Donald U. Gubser, M. Ashraf Imam
  • Publication number: 20020114725
    Abstract: A palladium-boron composition and methods of making and using same are provided. In one aspect, the invention comprises an alloy comprising palladium and boron, the boron being in solid solution in the palladium and the alloy having a two-phase structure, wherein each phase of the two-phase structure has the same crystal structure as the other phase and has a different set of lattice parameters from the other phase such that the palladium is greatly hardened by the presence of the smaller phase crystals within the spaces between the larger phase crystals. The composition is carefully prepared by a process wherein palladium and an amount of boron sufficient to place the boron in solid solution, but insufficient to combine with the palladium, are placed together and repeatedly arc melted, cooled and turned over until sufficiently mixed.
    Type: Application
    Filed: March 8, 2002
    Publication date: August 22, 2002
    Inventors: Melvin H. Miles, M. Ashraf Imam
  • Patent number: 6185810
    Abstract: A high temperature superconducting composite rod, wire or tape is formed by filling the open cells of a reticulated foam structure made of silver, silver alloy, gold or gold alloy with a superconducting ceramic oxide or precursor, compacting the filled structure and forming it into a rod, wire or tape and heating it to melt and/or texture the superconducting ceramic oxide. The resulting composite has continuous ligaments of metal throughout a continuous region of superconducting ceramic oxide.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: February 13, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Donald U. Gubser, M. Ashraf Imam
  • Patent number: 5895726
    Abstract: Metal foams are impregnated with a phthalonitrile prepolymer. The metal f/polymer composite formed upon curing has excellent acoustic damping, structural properties, oxidative stability, and flame resistance. Foams of various metals, such as aluminum, titanium, nickel, copper, iron, zinc, lead, silver, gold, platinum, tantalum, and alloys based on these metals may be used.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: April 20, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: M. Ashraf Imam, Satya B. Sastri, Teddy M. Keller
  • Patent number: 5333667
    Abstract: A metal composite material provides improved strength at all temperatures, in particular at those temperatures greater half the melting point of its matrix. The metal composite material is at least 50 volume percent hard particulate material in a matrix which is significantly more ductile than the hard particulate material. At or above 50 volume percent hard particulate material, each particle is surrounded by a thin film of the matrix material. This thin film resists deformation by converting sliding motion between particles into the rotational motion of the particles about each other. The matrix may be made by infiltrating a powder of the particulate material with a charge of the matrix material, for example, by hot isostatically pressing the matrix material into the powder or by melting a block of matrix material on top of the powder and thus infiltrating the powder by gravitational flow of the melted matrix material into the powder.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: August 2, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Norman P. Louat, Virgil Provenzano, M. Ashraf Imam, Kuntimaddi Sadananda