Patents by Inventor Akihisa Otsuki

Akihisa Otsuki 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: 11292214
    Abstract: A method for molding a composite material and a device for molding a composite material are provided which are able to suppress the occurrence of voids in a composite material and improve the mechanical characteristics and appearance quality of the composite material. In the method for molding a composite material (10), a seal region (270) including a cavity (250) in which a reinforcing base material (11) is disposed and an outer peripheral region (260) that communicates with an outer periphery of the cavity is air-tightly sealed by means of a first sealing member (310). Then, an operation of suctioning a gas from the outer peripheral region to evacuate the gas in the seal region is started, and a resin (12) is injected into a part of the cavity. Next, a mold (200) is clamped to provide a liquid-tight seal between the cavity and the outer peripheral region by means of a second sealing member (320) while pressing the resin to fill the cavity with the resin.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: April 5, 2022
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Akihisa Otsuki, Katsuhiro Usui
  • Patent number: 10590250
    Abstract: Provided are an fiber-reinforced plastic molding material having a satisfactory handling property, long storage stability, and high moldability enabling shaping into even a complicated shape, and a molded article thereof having excellent heat resistance, mechanical strength, and a method of producing the same. The fiber-reinforced plastic molding material includes a matrix resin containing, as an essential component, a phenoxy resin being solid at ordinary temperature and having a melt viscosity of 3,000 Pa·s or less at anywhere in the temperature region of from 160° C. to 220° C., with an epoxy resin and across-linking agent being blended as desired, in which the matrix resin is turned into fine powder having an average particle diameter (d50) of from 10 ?m to 150 ?m, and the matrix resin is caused to adhere to a reinforcing fiber base material by powder coating so as to achieve a resin content of from 20% to 50%.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: March 17, 2020
    Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Akihisa Otsuki, Hiroyuki Takahashi, Hideki Andoh
  • Publication number: 20200070441
    Abstract: A method for molding a composite material and a device for molding a composite material are provided which are able to suppress the occurrence of voids in a composite material and improve the mechanical characteristics and appearance quality of the composite material. In the method for molding a composite material (10), a seal region (270) including a cavity (250) in which a reinforcing base material (11) is disposed and an outer peripheral region (260) that communicates with an outer periphery of the cavity is air-tightly sealed by means of a first sealing member (310). Then, an operation of suctioning a gas from the outer peripheral region to evacuate the gas in the seal region is started, and a resin (12) is injected into a part of the cavity. Next, a mold (200) is clamped to provide a liquid-tight seal between the cavity and the outer peripheral region by means of a second sealing member (320) while pressing the resin to fill the cavity with the resin.
    Type: Application
    Filed: April 19, 2018
    Publication date: March 5, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Akihisa OTSUKI, Katsuhiro USUI
  • Publication number: 20180079879
    Abstract: Provided are an fiber-reinforced plastic molding material having a satisfactory handling property, long storage stability, and high moldability enabling shaping into even a complicated shape, and a molded article thereof having excellent heat resistance, mechanical strength, and a method of producing the same. The fiber-reinforced plastic molding material includes a matrix resin containing, as an essential component, a phenoxy resin being solid at ordinary temperature and having a melt viscosity of 3,000 Pa·s or less at anywhere in the temperature region of from 160° C. to 220° C., with an epoxy resin and a cross-linking agent being blended as desired, in which the matrix resin is turned into fine powder having an average particle diameter (d50) of from 10 ?m to 150 ?m, and the matrix resin is caused to adhere to a reinforcing fiber base material by powder coating so as to achieve a resin content of from 20% to 50%.
    Type: Application
    Filed: March 22, 2016
    Publication date: March 22, 2018
    Applicant: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
    Inventors: Akihisa Otsuki, Hiroyuki Takahashi, Hideki Andoh