Patents Represented by Attorney Sharon K. Severance
  • Patent number: 6350713
    Abstract: This invention pertains to ceramic matrix composites that comprise the coated ceramic fibers wherein the coating comprises at least one binary coating of boron nitride (BN) and silicon nitride (Si3N4) within ceramic matrices derived from curable preceramic polymers. The composites can be formed into complex shapes which have good oxidation resistance at high temperature, good resistance to moisture high flexural strength and are resistant to moisture.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: February 26, 2002
    Assignee: Dow Corning Corporation
    Inventor: Daniel Ralph Petrak
  • Patent number: 6316541
    Abstract: A method for making oil free polysiloxane standard, fine and microemulsions using emulsion polymerization is disclosed. The method comprises reacting a cyclicsiloxane in the presence of a catalyst, ionic surfactant and nonionic surfactant within a certain operating window. Emulsions containing silicone copolymers can also be produced using the method of the instant invention.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: November 13, 2001
    Assignee: Dow Corning Corporation
    Inventor: Ronald Paul Gee
  • Patent number: 6313045
    Abstract: Nanoporous silicone resins and silicone resin films having low dielectric constants and a method for preparing such nanoporous silicone resins.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: November 6, 2001
    Assignee: Dow Corning Corporation
    Inventors: Bianxiao Zhong, Russell Keith King, Kyuha Chung, Shizhong Zhang
  • Patent number: 6307081
    Abstract: This invention relates to a macromonomer and a method for its preparation. The macromonomer has one or more silicon-bonded hydrogen atoms at one molecular chain terminal, and one or more aliphatically unsaturated silicon-bonded organic groups at the other molecular chain terminal. This invention further relates to a method of forming a hyperbranched polymer by polymerizing the macromonomer with a group VIII metal catalyst. The hyperbranched polymers can be used as surfactants, gelling agents, drug delivery systems, and polymeric absorbents.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: October 23, 2001
    Assignee: Dow Corning Silicone Company, Ltd.
    Inventors: Kyosuke Takiuchi, Tadashi Okawa, Stephen Edward Cray, Aziz Muzafarow
  • Patent number: 6306541
    Abstract: A lithium ion battery electrode formed by the pyrolysis of a silane polymer followed by introducing lithium ions. These electrodes can be used to form batteries with large capacities, low irreversible capacity, high density and good safety behavior.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: October 23, 2001
    Assignee: Dow Corning Corporation
    Inventors: Jeffery Raymond Dahn, Alf M. Wilson, Weibing Xing, Gregg Alan Zank
  • Patent number: 6297340
    Abstract: A hydrosilylation reaction method that achieves high catalytic activity and stability, and improves the positional selectivity of the hydrosilylation reaction product. The method comprises reacting an unsaturated compound selected from the group consisting of aromatic vinyl compounds and allyl halides with a silicon compound having hydrosilyl groups described by formula HSiRn(Z)3−n, where n=0, 1, or 2, R is a hydrocarbon group and Z is selected from the group consisting of a silamino group, siloxy group, and siloxanoxy group in the presence of a carboxylic acid compound, a silyl ester of a sulfonic acid, and a platinum catalyst.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: October 2, 2001
    Assignee: Dow Corning Asia, Ltd.
    Inventor: Mamoru Tachikawa
  • Patent number: 6297303
    Abstract: The invention pertains to a polydiorganosiloxane dispersibility improver for fluororesin powders that contains in the pendant position (A) an organic group selected from the set consisting of polyoxyalkylene-functional organic groups, alkyl groups having at least 12 carbon atoms, and polydialkylsiloxane chain-containing organic groups, and contains in the pendant position or the molecular chain terminal position, (B) a perfluoroalkyl-functional organic group with the general formula F(CF2)a—R1— in which R1 is alkylene or alkyleneoxyalkylene and a is an integer with a value of at least 3. The polydiorganosiloxane dispersibility improver for fluororesin powders has the ability to induce the uniform dispersion of fluororesin powders in organic resins. As a consequence the organic resin compositions have the ability to form uniform and transparent coatings that have an excellent surface lubricity.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: October 2, 2001
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hideki Kobayashi, Toru Masatomi
  • Patent number: 6294125
    Abstract: A method for changing the dielectric properties of a polymer impregnated and pyrolyzed ceramic matrix composite (polymer impregnated and pyrolyzed ceramic matrix composite) is disclosed. The polymer impregnated and pyrolyzed ceramic matrix composite can be used in aircraft and turbine engines. polymer impregnated and pyrolyzed ceramic matrix composite comprises a ceramic matrix, a reinforcing fiber, and at least 1 additive used to change dielectric properties (dielectric constant and loss factor). The additive can be a low dielectric constant material having a dielectric constant in the range of 1 to 7.5. The low dielectric constant material can be an oxide such as silica or aluminosilicate or a non-oxide such as silicon nitride, boron nitride, or silicon carbide. The low dielectric constant material can be incorporated in the ceramic matrix as a filler.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: September 25, 2001
    Assignee: Dow Corning Corporation
    Inventors: Todd Jeffery Bridgewater, Daniel Ralph Petrak, Andrew Szweda
  • Patent number: 6281285
    Abstract: A method for hydrolyzing chlorosilanes having at least three chlorine atoms bonded to each silicon atom to form silicone resins. The method comprises adding at least one of hydridotrichlorosilane, tetrachlorosilane, or organotrichlorosilane to a two-phase mixture comprising a non-polar organic solvent, an aqueous phase comprising 0 to about 43 weight percent hydrochloric acid, and a surface active compound selected from the group consisting of alkylsulphonic acid hydrate, alkali metal salt of alkylsulphonic acid, arysulphonic acid hydrate, and alkali metal salt of arylsulphonic acid.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: August 28, 2001
    Assignees: Dow Corning Corporation, Dow Corning Asia, Ltd.
    Inventors: Gregory Scott Becker, Leslie Earl Carpenter, II, Russell Keith King, Tetsuyuki Michino, Eric Scott Moyer
  • Patent number: 6268262
    Abstract: Disclosed is a method for making an air bridge in an electronic device. This method uses amorphous silicon carbide to protect electrical conductors in the device during formation of the bridge. The silicon carbide also provides hermetic and physical protection to the device after formation.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: July 31, 2001
    Assignee: Dow Corning Corporation
    Inventor: Mark Jon Loboda
  • Patent number: 6265086
    Abstract: A method for selective electroless metal deposition on a substrate. The method comprises applying a patterned coating comprising a silyl hydride functional resin onto a substrate. An electroless plating solution comprising a metal ion is then applied onto the silyl hydride functional resin coating to deposit a patterned metal film on the substrate. The process of the invention is especially useful in the electronics industry.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: July 24, 2001
    Assignee: Dow Corning Limited
    Inventor: Brian Harkness
  • Patent number: 6251975
    Abstract: This invention pertains to a dispersibility improver for fluororesin powders that has the ability to induce the uniform dispersion of fluororesin powders in organic resins; a modifier for application to organic resins wherein said modifier comprises fluororesin powder and the aforesaid dispersibility improver; and finally organic resin compositions that contain the aforesaid modifier and as a consequence have the ability to form uniform and transparent coatings having an excellent surface smoothness.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: June 26, 2001
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hideki Kobayashi, Toru Masatomi
  • Patent number: 6251520
    Abstract: A method for producing a sized, coated ceramic fiber decreases mechanical damage to the fiber during weaving, and the sizing can be removed after weaving by heating at a low temperature.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: June 26, 2001
    Assignee: Dow Corning Corporation
    Inventors: John Donald Blizzard, Andrew Szweda, Gary Michael Wieber
  • Patent number: 6214748
    Abstract: This invention pertains to a method for forming thin films on substrates wherein the films are produced by applying a solution of an electrically insulating, heat-curing resin onto the substrate, evaporating the solvent and exposing the resin to high energy radiation to cure the resin. The resin solution contains a substance selected from solvents and gas generating additives that causes the dedensification of the film during the cure of the resin. This results in a film having a dielectric constant of below 2.7. This invention also pertains to a semiconductor device having an interconnect structure comprising at least one electrically conductive layer with an interposed insulating layer having a dielectric constant of less than 2.7 wherein the insulating layer is produced by the method of this invention.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: April 10, 2001
    Assignee: Dow Corning Toray Silicone Co.
    Inventors: Akihiko Kobayashi, Katsutoshi Mine, Takashi Nakamura, Motoshi Sasaki, Kiyotaka Sawa
  • Patent number: 6159871
    Abstract: This invention pertains to a method for producing hydrogenated silicon oxycarbide (H:SiOC) films having low dielectric constant. The method comprises reacting an methyl-containing silane in a controlled oxygen environment using plasma enhanced or ozone assisted chemical vapor deposition to produce the films. The resulting films are useful in the formation of semiconductor devices and have a dielectric constant of 3.6 or less.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: December 12, 2000
    Assignee: Dow Corning Corporation
    Inventors: Mark Jon Loboda, Jeffrey Alan Seifferly
  • Patent number: 6149966
    Abstract: To provide a composition and process for forming insulating films that can produce insulating films having low dielectric constants. The composition comprises (A) an electrically insulating curable inorganic or organic resin, (B) a solvent, and (C) at least one solvent-soluble substance (excluding the solvent used for component (B)) that upon heating or by interaction with the resin (A) can generate gas or undergo volatilization in the temperature range from 0.degree. C. to 800.degree. C. The insulating films are prepared by coating the surface of a substrate the composition; evaporating the solvent; and subsequently heating the substrate in order to generate gas from component (C) during the course of or after the cure of the said resin (A).
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: November 21, 2000
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Akihiko Kobayashi, Katsutoshi Mine, Takashi Nakamura, Motoshi Sasaki, Kiyotaka Sawa
  • Patent number: 6146559
    Abstract: A method for preparing high density titanium diboride ceramic bodies in which titanium diboride powder is first mixed with a preceramic organosilicon polymer. The mixture is then molded and sintered under pressure or by a pressureless process.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: November 14, 2000
    Assignee: Dow Corning Corporation
    Inventor: Gregg Alan Zank
  • Patent number: 6144106
    Abstract: The instant invention pertains to a multi-layer tamper proof electronic coating wherein the first layer is a protecting layer produced from a preceramic silicon containing material and at least one filler. The second layer is a resin sealer coat produced from a sealer resin selected from the group consisting of colloidal inorganic-based siloxane resins, benzocyclobutene based resins, polyimide polymers, siloxane polyimides and parylenes. An optional third layer is a cap coating layer selected from SiO.sub.2 coating, SiO.sub.2 /ceramic oxide coating, silicon containing coatings, silicon carbon containing coatings, silicon nitrogen containing coatings, silicon oxygen nitrogen coatings, silicon nitrogen carbon containing coatings and/or diamond like coatings.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: November 7, 2000
    Assignee: Dow Corning Corporation
    Inventors: Clayton R. Bearinger, Robert Charles Camilletti, Loren Andrew Haluska, Keith Winton Michael
  • Patent number: 6103178
    Abstract: The present invention relates to a method for the formation of amorphous boron silicon oxycarbide fibers and crystalline boron-doped silicon carbide fibers wherein the method comprises preparing a blend of a siloxane resin and a carborane-siloxane oligomer, forming the blend into green fibers, and then curing and pyrolyzing the fibers.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: August 15, 2000
    Assignee: Dow Corning Corporation
    Inventors: Duane Ray Bujalski, Kai Su
  • Patent number: 6096483
    Abstract: The present invention provides a curable composition which comprises (A) a base-generating substance which generates a base when exposed to the action of ultraviolet light, (B) a siloxane polymer which has silicon-hydrogen bonds (Si--H) capable of reacting with hydroxy groups under the effect of the base to form silicon-oxygen bonds (Si--O) and hydrogen molecules (H.sub.2), and (C) an acid substance. This composition is cured by irradiation with ultraviolet light. During this ultraviolet irradiation, a mask is placed between a coating film of the composition and the radiation source, and the uncured portions of the composition are dissolved and removed so that a pattern is formed. The residual portions are then heated to produce a pattern-cured product.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: August 1, 2000
    Assignee: Dow Corning Asia, Ltd.
    Inventors: Brian R. Harkness, Mamoru Tachikawa, Kasumi Takei