Patents by Inventor Takayuki MAYAMA

Takayuki MAYAMA 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: 11376826
    Abstract: A multilayer film including alternately-laminated fluororesin layers and polyimide resin layers, wherein a total number of the fluororesin layers and the polyimide resin layers is five or more, a ratio of the total thickness of the fluororesin layers to the thickness of the whole multilayer film is 50% or more, and at least one of the outermost layers of the multilayer film is a fluororesin layer.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: July 5, 2022
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Hiroyuki Matsuyama, Makoto Tai, Akira Fujita, Takayuki Mayama
  • Publication number: 20210170732
    Abstract: A multilayer film including alternately-laminated fluororesin layers and polyimide resin layers, wherein a total number of the fluororesin layers and the polyimide resin layers is five or more, a ratio of the total thickness of the fluororesin layers to the thickness of the whole multilayer film is 50% or more, and at least one of the outermost layers of the multilayer film is a fluororesin layer.
    Type: Application
    Filed: March 19, 2019
    Publication date: June 10, 2021
    Inventors: Hiroyuki Matsuyama, Makoto Tai, Akira Fujita, Takayuki Mayama
  • Patent number: 10751977
    Abstract: A method for manufacturing a flexible metal-clad laminated plate includes the steps of: (a) obtaining a laminated body by laminating a polyimide resin film including a non-thermoplastic polyimide layer and an adhesive layer containing thermoplastic polyimide, the adhesive layer being provided on at least one side of the non-thermoplastic polyimide layer, and a metal foil; and (b) subjecting the laminated body obtained in the step (a) to heat treatment under an inert gas atmosphere and a pressure of 0.20 to 0.98 MPa at a temperature of a glass transition temperature Tg of the thermoplastic polyimide?20° C. to the glass transition temperature Tg+50° C.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: August 25, 2020
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Takayuki Mayama, Naoki Suzuki, Takashi Miwa, Shuichi Fujita, Kenji Nakamura
  • Publication number: 20190184680
    Abstract: A method for manufacturing a flexible metal-clad laminated plate includes the steps of: (a) obtaining a laminated body by laminating a polyimide resin film including a non-thermoplastic polyimide layer and an adhesive layer containing thermoplastic polyimide, the adhesive layer being provided on at least one side of the non-thermoplastic polyimide layer, and a metal foil; and (b) subjecting the laminated body obtained in the step (a) to heat treatment under an inert gas atmosphere and a pressure of 0.20 to 0.98 MPa at a temperature of a glass transition temperature Tg of the thermoplastic polyimide?20° C. to the glass transition temperature Tg+50° C.
    Type: Application
    Filed: May 29, 2017
    Publication date: June 20, 2019
    Inventors: Takayuki MAYAMA, Naoki SUZUKI, Takashi MIWA, Shuichi FUJITA, Kenji NAKAMURA
  • Publication number: 20180242448
    Abstract: The present invention provides a resin composition comprising a specific styrene polymer, a specific inorganic filler, and a curing agent, wherein the styrene polymer is a specific acid-modified styrene polymer, and the resin composition satisfies specific conditions in the form of a film having a thickness of 25 ?m.
    Type: Application
    Filed: February 14, 2018
    Publication date: August 23, 2018
    Inventors: Kazuo YOSHIKAWA, Makoto TAI, Nobuyuki IWANO, Takayuki MAYAMA