Patents by Inventor Nungavram S. Viswanathan

Nungavram S. Viswanathan 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: 7479462
    Abstract: Thin films are disclosed that are suitable as dielectrics in IC's and for other similar applications. In particular, the invention concerns thin films comprising compositions obtainable by hydrolysis of two or more silicon compounds, which yield an at least partially cross-linked siloxane structure. The invention also concerns a method for producing such films by preparing siloxane compositions by hydrolysis of suitable reactants, by applying the hydrolyzed compositions on a substrate in the form of a thin layer and by curing the layer to form a film. In one example, a thin film comprising a composition is obtained by hydrolyzing a monomeric silicon compound having at least one hydrocarbyl radical, containing an unsaturated carbon-to-carbon bond, and at least one hydrolyzable group attached to the silicon atom of the compound with another monomeric silicon compound having at least one aryl group and at least one hydrolyzable group attached to the silicon atom of the compound to form a siloxane material.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: January 20, 2009
    Assignee: Silecs Oy
    Inventors: Juha T. Rantala, Jason S. Reid, Nungavram S. Viswanathan, T.Teemu T. Tormanen
  • Patent number: 7473650
    Abstract: A method for making an integrated circuit is disclosed as comprising depositing alternating regions of electrically conductive and dielectric materials on a substrate, wherein an area of dielectric material is formed by: a silane precursor having a fully or partially fluorinated first organic group comprising an unsaturated carbon-carbon double bond, the fully or partially fluorinated organic group bound to silicon in the silane precursor; forming from the silane precursor a hybrid organic-inorganic material having a molecular weight of at least 500 on a substrate; and increasing the molecular weight of the hybrid material by exposure to heat, electromagnetic radiation or electron beam so as to break the unsaturated carbon-carbon double bond and cross link via the fully or partially fluorinated organic group.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: January 6, 2009
    Assignee: Silecs Oy
    Inventors: Juha T. Rantala, Jason S. Reid, T. Teemu T. Tormanen, Nungavram S. Viswanathan, Arto L. T. Maaninen
  • Patent number: 7256467
    Abstract: A micro-electromechanical device is formed on a substrate. The device has sliding, abrading or impacting surfaces. At least one of these surfaces is covered with an anti-stiction material. The anti-stiction material is provided from a slicon compound precursor (e.g. silane, silanol) or multiple silicon compound precursors. Preferably the precursor(s) is fluorinated—more preferably perfluorinated, and is deposited with a solvent as a low molecular weight oligomer or in monomeric form. Examples include silanes (fluorinated or not) with aromatic or polycyclic ring sturctures, and/or silanes (fluorinated or not) having alkenyl, alkynyl, epoxy or acrylate groups. Mixtures either or both of these groups with alkyl chain silanes (preferably fluorinated) are also contemplated.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: August 14, 2007
    Assignee: Silecs Oy
    Inventors: Jason S. Reid, Nungavram S. Viswanathan
  • Patent number: 7144827
    Abstract: A method for making an integrated circuit is disclosed as comprising depositing alternating regions of electrically conductive and dielectric materials on a substrate, wherein an area of dielectric material is formed by: a silane precursor having a fully or partially fluorinated first organic group comprising an unsaturated carbon-carbon double bond, the fully or partially fluorinated organic group bound to silicon in the silane precursor; forming from the silane precursor a hybrid organic-inorganic material having a molecular weight of at least 500 on a substrate; and increasing the molecular weight of the hybrid material by exposure to heat, electromagnetic radiation or electron beam so as to break the unsaturated carbon-carbon double bond and cross link via the fully or partially fluorinated organic group.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 5, 2006
    Assignee: Silecs Oy
    Inventors: Juha T. Rantala, Jason S. Reid, T Teemu T. Tormanen, Nungavram S. Viswanathan, Arto L. T. Maaninen
  • Patent number: 7060634
    Abstract: An integrated circuit is provided comprising a substrate and discrete areas of electrically insulating and electrically conductive material, wherein the electrically insulating material is a hybrid organic-inorganic material that has a density of 1.45 g/cm3 or more and a dielectric constant of 3.0 or less. The integrated circuit can be made by a method comprising: providing a substrate; forming discrete areas of electrically insulating and electrically conductive material on the substrate; wherein the electrically insulating material is deposited on the substrate followed by heating at a temperature of 350° C. or less; and wherein the electrically insulating material is a hybrid organic-inorganic material that has a density of 1.45 g/cm3 or more after densification. Also disclosed is a method for making an integrated circuit comprising performing a dual damascene method with an electrically conductive material and a dielectric, the dielectric being a directly photopatterned hybrid organic-inorganic material.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: June 13, 2006
    Assignee: Silecs Oy
    Inventors: Juha T. Rantala, Jason S. Reid, Nungavram S. Viswanathan, T. Teemu T. Tormanen
  • Patent number: 6974970
    Abstract: Thin films are disclosed that are suitable as dielectrics in IC's and for other similar applications. In particular, the invention concerns thin films comprising compositions obtainable by hydrolysis of two or more silicon compounds, which yield an at least partially cross-linked siloxane structure. The invention also concerns a method for producing such films by preparing siloxane compositions by hydrolysis of suitable reactants, by applying the hydrolyzed compositions on a substrate in the form of a thin layer and by curing the layer to form a film. In one example, a thin film comprising a composition is obtained by hydrolyzing a monomeric silicon compound having at least one hydrocarbyl radical, containing an unsaturated carbon-to-carbon bond, and at least one hydrolyzable group attached to the silicon atom of the compound with another monomeric silicon compound having at least one aryl group and at least one hydrolyzable group attached to the silicon atom of the compound to form a siloxane material.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 13, 2005
    Assignee: Silecs Oy
    Inventors: Juha T. Rantala, Jason S. Reid, Nungavram S. Viswanathan, T. Teemu T. Tormanen
  • Publication number: 20040188713
    Abstract: A method for making an integrated circuit is disclosed as comprising depositing alternating regions of electrically conductive and dielectric materials on a substrate, wherein an area of dielectric material is formed by: a silane precursor having a fully or partially fluorinated first organic group comprising an unsaturated carbon-carbon double bond, the fully or partially fluorinated organic group bound to silicon in the silane precursor; forming from the silane precursor a hybrid organic-inorganic material having a molecular weight of at least 500 on a substrate; and increasing the molecular weight of the hybrid material by exposure to heat, electromagnetic radiation or electron beam so as to break the unsaturated carbon-carbon double bond and cross link via the fully or partially fluorinated organic group.
    Type: Application
    Filed: January 17, 2003
    Publication date: September 30, 2004
    Inventors: Juha T. Rantala, Jason S. Reid, T. Teemu T. Tormanen, Nungavram S. Viswanathan, Arto L.T. Maaninen
  • Publication number: 20040012089
    Abstract: An integrated circuit is provided comprising a substrate and discrete areas of electrically insulating and electrically conductive material, wherein the electrically insulating material is a hybrid organic-inorganic material that has a density of 1.45 g/cm3 or more and a dielectric constant of 3.0 or less. The integrated circuit can be made by a method comprising: providing a substrate; forming discrete areas of electrically insulating and electrically conductive material on the substrate; wherein the electrically insulating material is deposited on the substrate followed by heating at a temperature of 350° C. or less; and wherein the electrically insulating material is a hybrid organic-inorganic material that has a density of 1.45 g/cm3 or more after densification.
    Type: Application
    Filed: January 17, 2003
    Publication date: January 22, 2004
    Inventors: Juha T. Rantala, Jason S. Reid, Nungavram S. Viswanathan, T. Teemu T. Tormanen
  • Publication number: 20040012061
    Abstract: A micro-electromechanical device is formed on a substrate. The device has sliding, abrading or impacting surfaces. At least one of these surfaces is covered with an anti-stiction material. The anti-stiction material is provided from a slicon compound precursor (e.g. silane, silanol) or multiple silicon compound precursors. Preferably the precursor(s) is fluorinated—more preferably perfluorinated, and is deposited with a solvent as a low molecular weight oligomer or in monomeric form. Examples include silanes (fluorinated or not) with aromatic or polycyclic ring sturctures, and/or silanes (fluorinated or not) having alkenyl, alkynyl, epoxy or acrylate groups. Mixtures either or both of these groups with alkyl chain silanes (preferably fluorinated) are also contemplated.
    Type: Application
    Filed: June 4, 2003
    Publication date: January 22, 2004
    Inventors: Jason S. Reid, Nungavram S. Viswanathan
  • Publication number: 20030186494
    Abstract: Thin films are disclosed that are suitable as dielectrics in IC's and for other similar applications. In particular, the invention concerns thin films comprising compositions obtainable by hydrolysis of two or more silicon compounds, which yield an at least partially cross-linked siloxane structure. The invention also concerns a method for producing such films by preparing siloxane compositions by hydrolysis of suitable reactants, by applying the hydrolyzed compositions on a substrate in the form of a thin layer and by curing the layer to form a film. In one example, a thin film comprising a composition is obtained by hydrolyzing a monomeric silicon compound having at least one hydrocarbyl radical, containing an unsaturated carbon-to-carbon bond, and at least one hydrolyzable group attached to the silicon atom of the compound with another monomeric silicon compound having at least one aryl group and at least one hydrolyzable group attached to the silicon atom of the compound to form a siloxane material.
    Type: Application
    Filed: January 17, 2003
    Publication date: October 2, 2003
    Inventors: Juha T. Rantala, Jason S. Reid, Nungavram S. Viswanathan, T. Teemu T. Tormanen