Patents by Inventor Takahumi Sakuramoto

Takahumi Sakuramoto 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: 5089071
    Abstract: An adhesive film comprising a ceramic powder and an adhesive composition having pressure-sensitive properties at room temperature (20.degree. C.), and a process for producing a multilayered ceramic structure, such as multilayered ceramic substrates, laminated ceramic capacitors, etc. using the adhesive film, are disclosed.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: February 18, 1992
    Assignee: Nitto Electrical Industrial
    Inventors: Takashi Tominaga, Takahumi Sakuramoto, Souji Nishiyama, Kiyohiro Kamei, Yoshiki Kobayashi, Gosei Uemura
  • Patent number: 5008151
    Abstract: A glass powder adhesive sheet used for a surface coating of inorganic structures comprising ceramics, metals, glasses, etc., a glazed ceramic substrate such as a substrate of electronic circuit, etc. or a heat-resistant label, etc., which comprises a glass powder molding comprising as main components, a glass powder and a resin binder, and an adhesive layer having a thermal decomposition initiation temperature higher than that of the resin binder, provided on the surface of the glass powder molding.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: April 16, 1991
    Assignee: Nitto Denko Corporation
    Inventors: Takashi Tominaga, Souji Nishiyama, Takahumi Sakuramoto, Makoto Honda
  • Patent number: 4830819
    Abstract: A composition for fixing a metal powder molding at sintering, which is used, in the case of disposing a metal powder molding formed by rolling a mixture of a metal powder and a synthetic resin-based binder on a metal base material and sintering the metal powder molding in a non-oxidizing atmosphere, to adhere and fix the metal powder molding onto the base material until the metal powder molding is sintered interposing between the metal powder molding and the base material, comprising a polyimide liquid composition containing a polyimide precursor and an organic solvent as the essential components.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: May 16, 1989
    Assignee: Nitto Denko Corporation
    Inventors: Takahumi Sakuramoto, Makoto Kojima, Eishi Asoshina, Takashi Tominaga
  • Patent number: 4797251
    Abstract: A composition for fixing metal powder molding at sintering, which is used, in the case of disposing a metal powder molding formed by rolling a mixture of a metal powder and a synthetic resin-based binder on a metal base material and sintering the metal powder molding in a non-oxidizing atmosphere, to adhere and fix the metal powder molding onto the base material until the metal powder molding is sintered by interposing between the metal powder molding and the base material, comprising a thermosetting resin composition containing a mixture of a thermosetting resin and at least one member selected from the group consisting of a metal fine powder, a thermoplastic resin and an adhesive material, wherein the amount of the residual carbon of the composition after completion of sintering is at least about 0.5% by weight.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: January 10, 1989
    Assignee: Nitto Electric Industrial Co., Ltd.
    Inventors: Takahumi Sakuramoto, Eishi Asoshina, Takashi Tominaga, Ichiro Ijichi, Kiyohiro Kamei, Toshiharu Konishi
  • Patent number: 4681733
    Abstract: A method for fixing an alloy powder molding at sintering composition by placing an alloy powder molding formed by rolling a mixture of an alloy powder and a synthetic resin-based pressure-sensitive adhesive composition on a metal base material by interposing a composition between the molding and the base material until the molding is sintered, in the case that the alloy powder molding is placed on the metal base material and sintered after keeping at 150.degree. to 400.degree. C. for at least 5 minutes under a non-oxidizing atmosphere, the composition comprising as a main component an acrylic copolymer which comprises about 80 to 99.5% by weight of alkyl (meth)acrylate having an average carbon atom number of 2 to 12 in the alkyl moiety and about 20 to 0.5% by weight of a polymerizable monomer having a functional group in the molecule or a mixture of 100 parts by weight of the copolymer and about 0.
    Type: Grant
    Filed: September 18, 1985
    Date of Patent: July 21, 1987
    Assignee: Nitto Electric Industrial Co., Ltd.: Mazda Motor Corporation
    Inventors: Toshiharu Konishi, Yukio Shimizu, Takahumi Sakuramoto, Tsuyoshi Morishita, Shigemi Osaki
  • Patent number: 4670215
    Abstract: There is disclosed a process for forming a wear-resistant, sintered layer on a metallic substrate. The process comprises steps of adhesively attaching to a surface of metallic substrate an alloy particle sheet containing 94 to 99 weight % of ternary eutectic alloy particles and 6 to 1 weight % of acryl binder, heating in a non-oxidating atmosphere to a temperature of 150.degree. to 380.degree. C. and holding at the temperature for at least 5 minutes, and heating a sintering temperature of the alloy particles.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: June 2, 1987
    Inventors: Tsuyoshi Morishita, Sigemi Osaki, Noriyuki Sakai, Yukio Shimizu, Toshiharu Konishi, Takahumi Sakuramoto
  • Patent number: 4608225
    Abstract: A composition for fixing a metal powder molding at sintering, which is used, in the case of disposing a metal powder molding formed by rolling a mixture of a metal powder and a synthetic resin-based binder on a metal base material and sintering the metal powder molding in a non-oxidizing atmosphere, by interposing between the metal powder molding and the base material, comprising a thermosetting resin composition containing a thermosetting resin as the essential component, the amount of the residual carbon of which after the completion of sintering is at least about 0.5% by weight.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: August 26, 1986
    Assignees: Nitto Electric Industrial Co. Ltd., Mazda Motor Corporation
    Inventors: Takahumi Sakuramoto, Eishi Asoshina, Takashi Tominaga, Yukio Shimizu, Tsuyoshi Morishita, Sigemi Osaki, Noriyuki Sakai
  • Patent number: 4596692
    Abstract: A process for forming a wear-resistant, sintered layer on an iron based substrate which comprises steps of providing a first alloy sheet containing 94 to 99 weight % of Fe-Cr type alloy particles and 6 to 1 weight % of acryl binder and a second alloy sheet containing 94 to 99 weight % of eutectic alloy particles and 6 to 1 weight % of acryl binder, placing the first and second alloy sheets in a superposed condition on the substrate, and heating in a non-oxidating atmosphere to a temperature which is higher than a solidus temperature of the eutectic alloy but lower than a solidus temperature of the Fe-Cr type alloy.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: June 24, 1986
    Inventors: Tsuyoshi Morishita, Sigemi Osaki, Yasuhumi Kawado, Yukio Shimizu, Toshiharu Konishi, Takahumi Sakuramoto