Patents by Inventor Yukichi Konami

Yukichi Konami 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: 20210331428
    Abstract: Provided are a fiber-reinforced resin molding material with which a lightweight and high-strength fiber-reinforced resin molded article can be easily obtained and a method for manufacturing the fiber-reinforced resin molding material.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Yukichi KONAMI
  • Patent number: 10899856
    Abstract: The present invention provides a SMC of which excessive thickening with time is suppressed while of which sufficient initial thickening by an isocyanate-based thickener is maintained, particularly of which a decrease in flowability at the time of molding to be easily actualized in the case of containing an aromatic vinyl compound such as styrene is suppressed, and which exhibits excellent storage stability and moldability, a molding material for obtaining the SMC, and a fiber-reinforced composite material using the SMC. The invention provides a molding material including: a matrix resin composition containing the following Component (A), the following Component (B), the following Component (D) and the following Component (E); and the following Component (C), in which a proportion of the Component (E) with respect to 100 parts by mass of a sum of the Component (A) and the Component (B) is 0.002 part by mass or more and 0.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: January 26, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yukichi Konami, Seiji Tsuchiya, Yuji Kazehaya
  • Publication number: 20200131297
    Abstract: A sheet molding compound according to a first aspect of the present invention comprises: a thickened product of a resin composition comprising a vinyl ester resin, a thickener, a polymerization initiator, a polymerization inhibitor and isobornyl methacrylate; and a reinforcing fiber.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 30, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Seiji TSUCHIYA, Hayato OGASAWARA, Yukichi KONAMI, Hiroyuki NAKAO, Shinichirou FURUYA, Yasuhiko NABESHIMA, Atsushi TAKAHASHI
  • Publication number: 20200047430
    Abstract: Provided are a fiber-reinforced resin molding material with which a lightweight and high-strength fiber-reinforced resin molded article can be easily obtained and a method for manufacturing the fiber-reinforced resin molding material.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 13, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Yukichi KONAMI
  • Publication number: 20190040163
    Abstract: The present invention provides a SMC of which excessive thickening with time is suppressed while of which sufficient initial thickening by an isocyanate-based thickener is maintained, particularly of which a decrease in flowability at the time of molding to be easily actualized in the case of containing an aromatic vinyl compound such as styrene is suppressed, and which exhibits excellent storage stability and moldability, a molding material for obtaining the SMC, and a fiber-reinforced composite material using the SMC. The invention provides a molding material including: a matrix resin composition containing the following Component (A), the following Component (B), the following Component (D) and the following Component (E); and the following Component (C), in which a proportion of the Component (E) with respect to 100 parts by mass of a sum of the Component (A) and the Component (B) is 0.002 part by mass or more and 0.
    Type: Application
    Filed: October 4, 2018
    Publication date: February 7, 2019
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yukichi Konami, Seiji Tsuchiya, Yuji Kazehaya
  • Patent number: 9969146
    Abstract: Provided are a layered substrate that has excellent mechanical properties such as a flexural strength or a flexural modulus applicable to a structural material, the variations in those mechanical properties are small, exhibits excellent formability into a complicated shape, and is able to be molded in a short time, and a method for manufacturing the same. A layered substrate fabricated by layering plural sheets of sheet-shaped prepregs containing a reinforcing fiber oriented in one direction and a thermoplastic matrix resin, wherein the prepreg has a slit penetrating from the front surface to the back surface, each slit is provided so as to intersect with each reinforcing fiber only one time.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: May 15, 2018
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takeshi Ishikawa, Masao Tomioka, Masahiro Osuka, Yuuji Fujita, Yukichi Konami, Takahiro Hayashi
  • Publication number: 20150207104
    Abstract: A laminate is described, including a substrate, an undercoat layer on the substrate, and an inorganic film on the undercoat layer. The material of the inorganic film is at least one material of a conductive metal oxide and a metal nitride. In an image obtained by Fourier transforming an image obtained by using an atomic force microscope to take a picture of a surface of the inorganic film, the azimuth angle of the image obtained from the Fourier transformation from the center of the image toward the direction of 12 o'clock is set to 0°. In approximate curves of 36 brightness value plots obtained by radially plotting the brightness values every 10° from 0°, a maximum value is observed in 18 or more of the approximate curves.
    Type: Application
    Filed: July 22, 2013
    Publication date: July 23, 2015
    Inventors: Kazunori Mukunoki, Yumiko Saeki, Toshiaki Hattori, Yukichi Konami, Kouji Furukawa
  • Publication number: 20130186467
    Abstract: A mold having an uneven structure is provided, wherein surface roughness Ra of the uneven structure, a maximum value Ra?(max) and a minimum value Ra?(min) of line roughness Ra? satisfy the following Expression (1). 0.13?(Ra?(max)?Ra?(min))/Ra?0.
    Type: Application
    Filed: September 30, 2011
    Publication date: July 25, 2013
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Yumiko Saeki, Kuniaki Endo, Toshiaki Hattori, Yukichi Konami, Kouji Furukawa
  • Patent number: 6870674
    Abstract: In a lens sheet, a lens portion (3) made of activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion (3) is disposed on at least one side of a transparent substrate (2) such as plastic sheet, a relaxation layer (1) is disposed between the transparent substrate (2) and the lens portion (3), and the thickness of the relaxation layer (1) is within a range of 1% to 30% of the height (H) of the lens units. The relaxation layer (1) is made of activation energy curing resin and formed integrally with the lens portion (3). The refractive index of the transparent substrate (2) is lower than that of the lens portion (3). The lens units are elongated prisms each having a substantially triangular cross section. The thickness of the relaxation layer is within a range of 1 ?m to 10 ?m, for example. The prisms have the vertical angle of 50° to 75° and are arranged with a pitch of 10 ?m to 150 ?m.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: March 22, 2005
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami, Akiyoshi Kogame
  • Publication number: 20040075897
    Abstract: In a lens sheet, a lens portion (3) made of activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion (3) is disposed on at least one side of a transparent substrate (2) such as plastic sheet, a relaxation layer (1) is disposed between the transparent substrate (2) and the lens portion (3), and the thickness of the relaxation layer (1) is within a range of 1% to 30% of the height (H) of the lens units. The relaxation layer (1) is made of activation energy curing resin and formed integrally with the lens portion (3). The refractive index of the transparent substrate (2) is lower than that of the lens portion (3). The lens units are elongated prisms each having a substantially triangular cross section. The thickness of the relaxation layer is within a range of 1 &mgr;m to 10 &mgr;m, for example. The prisms have the vertical angle of 50° to 75° and are arranged with a pitch of 10 &mgr;m to 150 &mgr;m.
    Type: Application
    Filed: March 28, 2003
    Publication date: April 22, 2004
    Applicant: MITSUBISHI RAYON CO., LTD.
    Inventors: Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami, Akiyoshi Kogame
  • Patent number: 6628460
    Abstract: In a lens sheet, a lens portion made if activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion is disposed on at least one side of a transparent substrate such as plastic sheet, a relaxation layer is disposed between the transparent substrate and the lens portion, and the thickness of the relaxation layer is within a range of 1% to 30% of the height of the lens units. The relaxation layer is made of activation energy curing resin and formed integrally with the lens portion. The refractive index of the transparent substrate is lower than that of the lens portion. The lens units are elongated prisms each having a substantially triangular cross section.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: September 30, 2003
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami, Akiyoshi Kogame
  • Patent number: 6206550
    Abstract: An active energy ray-curable composition comprising (A) 20 to 80 parts by weight of a compound represented by the following general formula I: wherein R1 represents hydrogen or methyl, X and Y may be the same or different and represent methyl, chlorine, bromine or iodine, and t and u each independently represent an integer of 0-2, (B) 20 to 80 parts by weight of at least one compound having at least one acryloyl or methacryloyl group in the molecule, or (B-1) 10 to 90 parts by weight of at least one compound having at least two acryloyl or methacryloyl groups in the molecule and (B-2) 1 to 90 parts by weight of at least one monoacrylate or monomethacrylate compound having one acryloyl or methacryloyl group in the molecule, and (C) 0.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: March 27, 2001
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Hiroshi Fukushima, Masao Hamada, Noriji Oishi, Yukichi Konami
  • Patent number: 5969867
    Abstract: An active energy ray-curable composition comprising(A) 20 to 80 parts by weight of a compound represented by the following general formula I: ##STR1## wherein R.sup.1 represents hydrogen or methyl, X and Y may be the same or different and represent methyl, chlorine, bromine or iodine, and t and u each independently represent an integer of 0-2,(B) 20 to 80 parts by weight of at least one compound having at least one acryloyl or methacryloyl group in the molecule, or (B-1) 10 to 90 parts by weight of at least one compound having at least two acryloyl or methacryloyl groups in the molecule and (B-2) 1 to 90 parts by weight of at least one monoacrylate or monomethacrylate compound having one acryloyl or methacryloyl group in the molecule, and(C) 0.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: October 19, 1999
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Hiroshi Fukushima, Masao Hamada, Noriji Oishi, Yukichi Konami