Patents by Inventor Takashi Komai

Takashi Komai 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: 20220388275
    Abstract: A resin-integrated fiber sheet 1 for vacuum forming for producing a fiber reinforced resin molded body through vacuum forming includes: unidirectional continuous fibers 2 that are spread fibers of a continuous fiber group and arrayed in parallel in one direction; bridging fibers 3 lying in directions crossing the unidirectional continuous fibers 2; and thermoplastic resin 4 present on part of the surface of the unidirectional continuous fibers 2 to unify the unidirectional continuous fibers 2 and the bridging fibers 3. A fiber reinforced resin molded body of the present invention is a vacuum formed body in which two or more of the resin-integrated fiber sheets 1 are stacked. A method for producing the molded body of the present invention includes subjecting the resin-integrated fiber sheets 1 to vacuum forming from a lower mold with a vacuum line and pressurizing the sheets with compressed air from an upper mold.
    Type: Application
    Filed: November 5, 2020
    Publication date: December 8, 2022
    Inventors: Tadaharu TANAKA, Takashi NAKAMURA, Yoichi HIRAISHI, Yuta NAKAME, Yuki KOMAI
  • Publication number: 20220205157
    Abstract: A resin-integrated carbon fiber sheet 1, including: a carbon fiber sheet 2 in which a carbon fiber filament group is spread and arrayed in parallel in one direction; resin 4 that is present on part of a surface of the carbon fiber sheet; and bridging fibers 3. One or more of the bridging fibers 3 is present on average on a surface of the carbon fiber sheet 2 in a direction across the carbon fiber sheet per 10 mm2 of the sheet 2, and the resin 4 on the surface adhesively fixes the bridging fibers 3 to the carbon fiber sheet 2. Thus, the present invention provides a resin-integrated carbon fiber sheet that is strong in the width direction of the carbon fiber sheet, high in cleavage resistance and excellent in handleability, and a production method of the same.
    Type: Application
    Filed: December 6, 2019
    Publication date: June 30, 2022
    Inventors: Tadaharu TANAKA, Wataru HORIMOTO, Yoichi HIRAISHI, Takashi NAKAMURA, Yuta NAKAME, Yuki KOMAI
  • Patent number: 9796015
    Abstract: According to the invention, by setting the linear thermal expansion amount when a mold made of a molding sand is heated from a room temperature to 1000° C. to be not more than 0.9%, and the ratio (D/d) between the diameter of a slump (D) and the diameter of a slump cone (d) in a slump test of the molding sand having a hardening agent kneaded to be not less than 1.65, a molding sand preferable for use in a mold produced using the self-hardening type of three dimensional laminate molding sand mold, having low thermal expansibility preventing occurrence of a veining defect, and capable of forming a large and complicated shape can be obtained.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: October 24, 2017
    Assignee: Kimura Chuzosho Co., Ltd.
    Inventors: Yoya Fukuda, Kenichi Hayashi, Takashi Komai, Yusuke Urushibata, Yusuke Tomita
  • Publication number: 20140224152
    Abstract: According to the invention, by setting the linear thermal expansion amount when a mold made of a molding sand is heated from a room temperature to 1000° C. to be not more than 0.9%, and the ratio (D/d) between the diameter of a slump (D) and the diameter of a slump cone (d) in a slump test of the molding sand having a hardening agent kneaded to be not less than 1.65, a molding sand preferable for use in a mold produced using the self-hardening type of three dimensional laminate molding sand mold, having low thermal expansibility preventing occurrence of a veining defect, and capable of forming a large and complicated shape can be obtained.
    Type: Application
    Filed: September 10, 2012
    Publication date: August 14, 2014
    Applicant: KIMURA CHUZOSHO CO., LTD.
    Inventors: Yoya Fukuda, Kenichi Hayashi, Takashi Komai, Yusuke Urushibata, Yusuke Tomita
  • Publication number: 20050096294
    Abstract: Provided by the present invention are an anti-coagulant comprising a polysaccharide having a structural unit in which an abundance ratio of glucose, glucuronic acid and rhamnose is 2:1:1 mole, preferably a polysaccharide having a structural unit represented by Formula (1) and more preferably a compound obtained by partially sulfating a hydroxyl group of gellan and an anti-thrombus agent or a blood contact face-treating agent for medical equipment comprising this anti-coagulant.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Inventors: Takashi Komai, Keiichi Miyamoto, Mototake Tsutsui, Ikuo Sato, Shinichi Takasaki
  • Patent number: 5734025
    Abstract: This invention provides a selective cellular fibronectin (cFN) adsorbent utilizing a nonwoven cellulose sulfate fabric and a method for fractional purification of FN which-comprises contacting an FN matter containing both plasma fibronectin (pFN) and cellular fibronectin (cFN) with the nonwoven cellulose sulfate fabric to separate pFN and cFN from each other. By the fractional purification method of the invention, cFN and pFN can be fractionated in an expedient manner and with high efficiency and both pFN and cFN can be recovered in high purity and good yield.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: March 31, 1998
    Assignee: Otsuka Pharnaceutical Factory, Inc.
    Inventors: Takashi Komai, Keiichi Miyashita, Eiji Sakashita, Hiroshi Kamogawa, Fujio Inoue, Soichiro Takenishi
  • Patent number: 5561114
    Abstract: This invention provides a selective cellular fibronectin (cFN) adsorbent utilizing a nonwoven cellulose sulfate fabric and a method for fractional purification of FN which comprises contacting an FN matter containing both plasma fibronectin (pFN) and cellular fibronectin (cFN) with the nonwoven cellulose sulfate fabric to separate pFN and cFN from each other. By the fractional purification method of the invention, cFN and pFN can be fractionated in an expedient manner and with high efficiency and both pFN and cFN can be recovered in high purity and good yield.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: October 1, 1996
    Assignees: Otsuka Pharmaceutical Factory Inc., Nissinbo Industries Inc.
    Inventors: Takashi Komai, Keiichi Miyashita, Eiji Sakashita, Hiroshi Kamogawa, Fujio Inoue, Soichiro Takenishi
  • Patent number: 5324823
    Abstract: The invention provides a selective adsorbent for cellular fibronectin (cFN) and a method for fractional purification of FN which includes contacting an FN material containing plasma fibronectin (pFN) and cFN with a crosslinked polysaccharide sulfate and/or an immobilized polysaccharide sulfate to fractionate the pFN and cFN.By the fractional purification method of the invention, cFN and pFN can be fractionated in an expedient manner and with high efficiency and both pFN and cFN can be recovered in high purity and good yield.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: June 28, 1994
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Kaneji Asakawa, Ryoichi Umemoto, Kazuo Hino, Eiji Sakashita, Takashi Komai