Patents by Inventor Ken Shimomai

Ken Shimomai 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: 20200118706
    Abstract: This resin composition for high dielectric constant materials contains 40-80% by mass of (A) a resin material and 20-60% by mass of (B) a carbon black. The carbon black (B) has a DBP absorption of 10-50 mL/100 g and an iodine adsorption of 5-40 mg/g. This resin composition for high dielectric constant materials has a dielectric constant of 4 or more and a dielectric loss tangent of 0.05 or less.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 16, 2020
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Ken SHIMOMAI, Hirotaka TSURUYA, Masahide SUGIYAMA, Yutaka NISHIBAYASHI
  • Patent number: 10546665
    Abstract: This resin composition for high dielectric constant materials contains 40-80% by mass of (A) a resin material and 20-60% by mass of (B) a carbon black. The carbon black (B) has a DBP absorption of 10-50 mL/100 g and an iodine adsorption of 5-40 mg/g. This resin composition for high dielectric constant materials has a dielectric constant of 4 or more and a dielectric loss tangent of 0.05 or less.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: January 28, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Ken Shimomai, Hirotaka Tsuruya, Masahide Sugiyama, Yutaka Nishibayashi
  • Publication number: 20150380125
    Abstract: This resin composition for high dielectric constant materials contains 40-80% by mass of (A) a resin material and 20-60% by mass of (B) a carbon black. The carbon black (B) has a DBP absorption of 10-50 mL/100 g and an iodine adsorption of 5-40 mg/g. This resin composition for high dielectric constant materials has a dielectric constant of 4 or more and a dielectric loss tangent of 0.05 or less.
    Type: Application
    Filed: February 6, 2014
    Publication date: December 31, 2015
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Ken SHIMOMAI, Hirotaka TSURUYA, Masahide SUGIYAMA, Yutaka NISHIBAYASHI
  • Patent number: 9063276
    Abstract: Provided is a polarizing lens which is excellent especially in terms of impact resistance, appearance, and prevention of eye strain and which has high precision of the surface shape. The polarizing lens is formed by laminating a sheet of an aromatic polycarbonate through an adhesive layer to each surface of a film having polarizing properties, curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet, inserting the polarizing sheet into a mold, and injecting an aromatic polycarbonate, wherein the polarizing sheet is obtained through the laminating so that the stretch axis of one of the aromatic-polycarbonate sheets is perpendicular to the absorption axis of the film having the polarizing properties.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: June 23, 2015
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Terutaka Tokumaru, Ken Shimomai, Katunori Suzuki, Kyousuke Nakamura, Masaki Yagoura, Akio Ohkubo
  • Patent number: 8936363
    Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: January 20, 2015
    Assignees: Mitsubishi Gas Chemical Company, Inc., MGC Filsheet Co., Ltd.
    Inventors: Terutaka Tokumaru, Katsunori Suzuki, Ken Shimomai, Masaki Yagoura, Kyousuke Nakamura, Akio Ohkubo
  • Publication number: 20140151911
    Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.
    Type: Application
    Filed: February 11, 2014
    Publication date: June 5, 2014
    Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Terutaka TOKUMARU, Katsunori Suzuki, Ken Shimomai, Masaki Yagoura, Kyousuke Nakamura, Akio Ohkubo
  • Publication number: 20130070196
    Abstract: Provided is a polarizing lens which is excellent especially in terms of impact resistance, appearance, and prevention of eye strain and which has high precision of the surface shape. The polarizing lens is formed by laminating a sheet of an aromatic polycarbonate through an adhesive layer to each surface of a film having polarizing properties, curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet, inserting the polarizing sheet into a mold, and injecting an aromatic polycarbonate, wherein the polarizing sheet is obtained through the laminating so that the stretch axis of one of the aromatic-polycarbonate sheets is perpendicular to the absorption axis of the film having the polarizing properties.
    Type: Application
    Filed: June 9, 2011
    Publication date: March 21, 2013
    Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Terutaka Tokumaru, Ken Shimomai, Katunori Suzuki, Kyousuke Nakamura, Masaki Yagoura, Akio Ohkubo
  • Publication number: 20130010253
    Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.
    Type: Application
    Filed: February 22, 2011
    Publication date: January 10, 2013
    Applicants: MGC Filsheet Co., Ltd., Mitsubishi Gas Chemical Company, Inc.
    Inventors: Terutaka Tokumaru, Katsunori Suzuki, Ken Shimomai, Masaki Yagoura, Kyousuke Nakamura, Akio Ohkubo
  • Patent number: 8277924
    Abstract: The present invention relates to a panel-shaped molded product having a laminated structure which is produced from a resin and used for side doors, back doors, hoods, roofs, etc., and exhibits a more excellent finishing accuracy without occurrence of bleed-out along an inner periphery of a frame part and fine distortions on a design part.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: October 2, 2012
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Hiroyuki Imaizumi, Masayuki Akada, Ken Shimomai, Yoshihiro Kayano
  • Publication number: 20090304970
    Abstract: The present invention relates to a panel-shaped molded product having a laminated structure which is produced from a resin and used for side doors, back doors, hoods, roofs, etc., and exhibits a more excellent finishing accuracy without occurrence of bleed-out along an inner periphery of a frame part and fine distortions on a design part.
    Type: Application
    Filed: September 7, 2007
    Publication date: December 10, 2009
    Inventors: Hiroyuki Imaizumi, Masayuki Akada, Ken Shimomai, Yoshihiro Kayano
  • Patent number: 6369141
    Abstract: The present invention provides a flame-retardant polycarbonate resin composition which comprises (a) 100 parts by weight of an aromatic polycarbonate resin, (b) 0.5-40 parts by weight of a phosphorus-containing flame retardant, (c) 0.01-5 parts by weight of polyfluoroethylene, (d) 0-5 parts by weight of sulfonic acid metal salt, and (e) 0.5-30 parts by weight of a multi-layered polymer having a core made of an elastic polymer having a glass-transition temperature (Tg) lower than a room temperature, and an outer layer made of a thermoplastic resin having an adhesiveness or miscibility to polycarbonate, provided that the composition comprises 3-40 parts by weight of a phosphorus-containing flame retardant when said composition comprises substantially no sulfonic acid metal salt.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: April 9, 2002
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Kazuhiko Ishii, Ken Shimomai, Michio Nakata
  • Patent number: 6359028
    Abstract: A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: March 19, 2002
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Shinya Miya, Satoshi Kanayama, Ken Shimomai
  • Patent number: 6342550
    Abstract: The purpose of the present invention is to provide a flame-retardant polycarbonate resin composition which contains phosphorus-free flame-retardant(s), has an excellent impact resistance, an excellent heat resistance as well as an excellent moldability, and can satisfy a severe flammability level. According to the present invention, there is provided a flame-retardant polycarbonate resin composition which comprises (A) 100 parts by weight of an aromatic polycarbonate resin, (B) 0.01-5 parts by weight of an organic sulfonic acid metal salt, (C) 0.01-5 parts by weight of a fluorinated polyolefin, (D) 0.2-20 parts by weight of a diene-containing multi-layered polymer, and wherein the content of a phosphorus-containing flame-retardant is less than 0.5 parts by weight.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: January 29, 2002
    Assignee: Mitsubishi Engineering Plastics Corporation
    Inventors: Kazuhiko Ishii, Ken Shimomai
  • Patent number: 5977206
    Abstract: A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: November 2, 1999
    Assignee: Mitsubishi Engineering-Plastics Corp.
    Inventors: Shinya Miya, Satoshi Kanayama, Ken Shimomai