Patents by Inventor Shigeru Ishihara

Shigeru Ishihara 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).

  • Publication number: 20120278978
    Abstract: There are provided a laminated fabric for protective clothing capable of achieving both higher heat shielding properties and comfort properties, and protective clothing using the same. A laminated fabric for protective clothing comprising two or more fabric layers including an outer layer and an inner layer, with the inner layer disposed on a skin side, when used in protective clothing, wherein the outer layer is a fabric composed of a fiber having an LOI value (limiting oxygen index) of 21 or more measured by JIS L 1091 E method, the inner layer is a fabric composed of a fiber having an LOI value (limiting oxygen index) of 21 or more measured by JIS L 1091E method, and a thermal diffusivity of 2.2×10?6 m2·s?1 or more, and the fabric has a porosity ranging from 85% to 98%, a thickness ranging from 0.5 mm to 8.0 mm and a basis weight ranging from 80 g/m2 to 250 g/m2, and further, protective clothing using this laminated fabric for protective clothing.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 8, 2012
    Applicant: TEIJIN TECHNO PRODUCTS LIMITED
    Inventors: Kaoru Wakatsuki, Hajime Izawa, Shigeru Ishihara, Yashushige Yagura
  • Patent number: 8173256
    Abstract: An aromatic polyamide fiber comprising an aromatic polyamide containing a structural repeating unit of the following formula (1), and a structural repeating unit of the following repeating unit (2) in an amount of 30 mol % or more to the whole amount of the aromatic polyamide structural units, the fiber having strength of 20 cN/dtex or more and modulus of elongation of 500 cN/dtex or more: wherein Ar1 and Ar2 each independently represent an unsubstituted or substituted divalent aromatic group.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: May 8, 2012
    Assignee: Teijin Techno Products Limited
    Inventors: Yasuhiro Marumoto, Shigeru Ishihara
  • Publication number: 20110004983
    Abstract: [Problems] To provide a resin composition having excellent flame retardancy and a fiber having excellent flame retardancy, without deteriorating conventional mechanical properties by adding a small amount of a flame-retardant additive. [Means for Resolution] A flame-retardant resin composition comprising a resin and composite particles in an amount of 1% by weight or more based on the resin, which are mainly composed of titanium dioxide and silicon dioxide and have a titanium dioxide content of 10 to 30% by weight and a silicon dioxide content of 70 to 90% by weight, a flame-retardant fiber obtained by fiberizing this flame-retardant resin composition, a heat-resistant cloth using this flame-retardant fiber, and further, protective clothing using this cloth.
    Type: Application
    Filed: February 10, 2009
    Publication date: January 13, 2011
    Applicant: TEIJIN TECHNO PRODUCTS LIMITED
    Inventors: Yasushige Yagura, Shigeru Ishihara, Hiromi Ozaki, Noriko Wada, Hajime Izawa, Shuji Sasabe, Kenji Takebayashi
  • Publication number: 20100029159
    Abstract: The heterocycle-containing aromatic polyamide fibers of the invention are excellent in balance among mechanical characteristics, particularly balance among tensile strength, initial modulus and strength in the direction perpendicular to the fiber axis, exhibit a high strength holding ratio under heat and humidity, and are excellent in flame retardancy, bulletproofness and cutting resistance, as compared to conventional aromatic polyamide fibers, and therefore can be favorably used in fields with severe mechanical characteristics and have stability to environmental variation. Accordingly, the heterocycle-containing aromatic polyamide fibers of the invention can be favorably used, for example, in fields including protective equipment, such as a helmet, a bulletproof vest and the like, a chassis for an automobile, a ship and the like, an electric insulating material, such as a printed circuit board and the like, and other various fields.
    Type: Application
    Filed: December 14, 2007
    Publication date: February 4, 2010
    Inventors: Shigeru Ishihara, Yasuhiro Marumoto, Noriko Wada, Hajime Izawa, Hiromi Ozaki
  • Publication number: 20090239052
    Abstract: An aromatic polyamide fiber comprising an aromatic polyamide containing a structural repeating unit of the following formula (1), and a structural repeating unit of the following repeating unit (2) in an amount of 30 mol % or more to the whole amount of the aromatic polyamide structural units, the fiber having strength of 20 cN/dtex or more and modulus of elongation of 500 cN/dtex or more: wherein Ar1 and Ar2 each independently represent an unsubstituted or substituted divalent aromatic group.
    Type: Application
    Filed: July 26, 2006
    Publication date: September 24, 2009
    Applicant: TEIJIN TECHNO PRODUCTS LIMITED
    Inventors: Yasuhiro Marumoto, Shigeru Ishihara
  • Patent number: 6838401
    Abstract: A heat-resistant fiber paper sheet which is formed from staple fibers made from a heat-resistant organic polymer, undrawn or low ratio drawn para-aromatic polyamide staple fibers, and an organic resin binder and/or fibrids comprising a heat-resistant organic polymer as main components, wherein the amount of said staple fibers is 45 to 97 percent by weight based on the total amount of said heat-resistant fiber paper sheet; the total amount of said organic resin binder and/or said fibrids is 3 to 55 percent by weight based on the total amount of said heat-resistant fiber paper sheet; and said organic resin binder is cured, and/or said undrawn or low ratio drawn para-aromatic polyamide staple fibers and said fibrids are partially softened, deformed and/or melted to exhibit the actions of binders.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: January 4, 2005
    Assignee: Teijin Limited
    Inventors: Sadamitsu Murayama, Michikage Matsui, Masanori Wada, Shigeru Ishihara
  • Patent number: 5044415
    Abstract: A tire chain which has a plurality of anti-sliding members, each of which is attached to a base plate and a pivot pin. Wing-shaped members are hingeably attached to the bases and the pivot pins are connected by chain links to form an endless linkage.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: September 3, 1991
    Inventor: Shigeru Ishihara