Patents by Inventor Sachiyo Sakagawa

Sachiyo Sakagawa 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: 10651563
    Abstract: A corner reflector includes annular balloons, which, when gas is supplied to the inside, annularly expand, and radio wave reflective films each developed to a plane by the expansion of the annular balloons. The three annular balloons are provided so as to be orthogonal to each other in the expansion. A constraint fabric wound around each annular balloon is provided. The constraint fabric includes an inner peripheral side fabric portion located on the side of a virtual central axis of the annular balloon and extending in the annular direction around the virtual central axis, and an outer peripheral side fabric portion located on the side opposite to the virtual central axis and extending in the annular direction. The elongation degree of the outer peripheral side fabric portion in the annular direction is higher than the elongation degree of the inner peripheral side fabric portion in the annular direction.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: May 12, 2020
    Assignees: IHI AEROSPACE CO., LTD, SEIREN CO., LTD.
    Inventors: Mamoru Mori, Hisanao Kataoka, Sachiyo Sakagawa, Susumu Takagi
  • Publication number: 20180019521
    Abstract: A corner reflector includes annular balloons, which, when gas is supplied to the inside, annularly expand, and radio wave reflective films each developed to a plane by the expansion of the annular balloons. The three annular balloons are provided so as to be orthogonal to each other in the expansion. A constraint fabric wound around each annular balloon is provided. The constraint fabric includes an inner peripheral side fabric portion located on the side of a virtual central axis of the annular balloon and extending in the annular direction around the virtual central axis, and an outer peripheral side fabric portion located on the side opposite to the virtual central axis and extending in the annular direction. The elongation degree of the outer peripheral side fabric portion in the annular direction is higher than the elongation degree of the inner peripheral side fabric portion in the annular direction.
    Type: Application
    Filed: February 17, 2016
    Publication date: January 18, 2018
    Inventors: Mamoru Mori, Hisanao Kataoka, Sachiyo Sakagawa, Susumu Takagi
  • Patent number: 8043983
    Abstract: A flame-retardant metal-coated cloth having a high degree of flame retardancy and a soft feeling without the use of any halogen compound or antimony compound is provided. In the flame-retardant metal-coated cloth, a flame-retardant film comprising a mixture (E) of a phosphorus compound (A), a metal hydroxide (B), a phosphoric ester (C), and a thermoplastic resin (D), is formed on at least one surface of a metal-coated cloth, and the ratio of (A):(B):(C):(D) is 20 to 200:100 to 950:10 to 250:100 in terms of a weight ratio.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 25, 2011
    Assignees: Daikyo Chemical Co., Ltd., Seiren Co., Ltd.
    Inventors: Terufumi Iwaki, Katsuo Sasa, Sachiyo Sakagawa, Toru Takegawa
  • Patent number: 7935405
    Abstract: A flame-retardant metal-coated fabric which not only has excellent electromagnetic wave shielding properties but has a high degree of flame retardancy without the necessity of containing a halogen compound or antimony compound. It is soft and suffers no deterioration of the metal coating even in long-term use.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: May 3, 2011
    Assignee: Seiren Co., Ltd.
    Inventors: Sachiyo Sakagawa, Toru Takegawa, Terufumi Iwaki, Katsuo Sasa
  • Publication number: 20090068907
    Abstract: A flame-retardant metal-coated fabric which not only has excellent electromagnetic wave shielding properties but has a high degree of flame retardancy without the necessity of containing a halogen compound or antimony compound. It is soft and suffers no deterioration of the metal coating even in long-term use.
    Type: Application
    Filed: April 19, 2006
    Publication date: March 12, 2009
    Inventors: Sachiyo Sakagawa, Toru Takegawa, Terufumi Iwaki, Katsuo Sasa
  • Publication number: 20080176082
    Abstract: A film of a filler resin is disposed on at least one surface of a metal-coated cloth, and a flame retardant film of a mixed resin of a flame retardant and a thermoplastic resin is disposed on at least one of the surface of the film of the filler resin or a surface of the metal-coated cloth on which a film of the filler resin is not disposed. As the filler resin and the thermoplastic resin, at least one selected from the group consisting of an acrylate resin, a urethane resin and a polyester resin can be used, and as the flame retardant, at least one selected from the group consisting of a bromine compound, a phosphorous compound and an antimony compound can be used.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 24, 2008
    Inventors: Sachiyo Sakagawa, Toru Takegawa
  • Publication number: 20050159061
    Abstract: A flame-retardant metal-coated cloth having a high degree of flame retardancy and a soft feeling without the use of any halogen compound or antimony compound is provided. In the flame-retardant metal-coated cloth, a flame-retardant film comprising a mixture (E) of a phosphorus compound (A), a metal hydroxide (B), a phosphoric ester (C), and a thermoplastic resin (D), is formed on at least one surface of a metal-coated cloth, and the ratio of (A):(B):(C):(D) is 20 to 200:100 to 950:10 to 250:100 in terms of a weight ratio.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 21, 2005
    Inventors: Terufumi Iwaki, Katsuo Sasa, Sachiyo Sakagawa, Toru Takegawa
  • Publication number: 20030036326
    Abstract: To a composite sheet in which on one or both surfaces of an open cell foam sheet fiber cloth is bonded, a conductive metal coating is provided so as to maintain the open cell of the foam followed by providing thereon a flame retardant composition, thereby a flame retardant conductive material suitable for a gasket material for electromagnetic wave shield is obtained.
    Type: Application
    Filed: August 13, 2002
    Publication date: February 20, 2003
    Applicant: SEIREN CO. LTD.
    Inventors: Susumu Takagi, Akihide Katayama, Sachiyo Sakagawa, Toru Takegawa