Patents by Inventor Yoichi Ohara

Yoichi Ohara 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: 20210163646
    Abstract: Expandable resin particles that have a reduced VOC content, a method of producing the expandable resin particles, and a foamed molded product that has reduced VOC emission are provided. The expandable resin particles contain a base material resin containing, as a structural unit, a styrene unit and an acrylonitrile unit and an expanding agent. The expandable resin particles have a styrene content and an ethylbenzene content each of which is not more than a specific amount.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Atsushi Iida, Mitsuhiro Tamura, Yoichi Ohara
  • Publication number: 20200172693
    Abstract: A method for producing expandable polystyrene-based resin particles, the method including producing polystyrene-based resin particles that comprise a styrene-based monomer and a polysiloxane-containing macro monomer, and impregnating an expanding agent into the polystyrene-based resin particles to produce the expandable polystyrene-based resin particles. The production of the polystyrene-based resin particles comprises the simultaneous addition of an initiator and the polysiloxane-containing macro monomer. The initiator causes the generation of one or more of an alkoxy radical and a carbonate radical.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 4, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Mitsuhiro Tamura, Yoichi Ohara
  • Publication number: 20200172692
    Abstract: Expandable polystyrene-based resin particles may include a styrene-based monomer, a polysiloxane-containing macro monomer, and a coating composition having a melting point of 40° C. or greater. A coefficient of static friction of a foamed molded product, obtained by pre-expanding the expandable polystyrene-based resin particles and molding the pre-expanded expandable polystyrene-based resin particles, may be 4.0 or less. The expandable polystyrene-based resin particles may have a surface layer part that contains polysiloxane as a main component.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 4, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Mitsuhiro Tamura, Yoichi Ohara
  • Patent number: 6329451
    Abstract: The invention relates to a flame-retardant thermoplastic resin composition having incorporated therein a trace of stabilized red phosphorus, which achieves both improvement of heat resistance and flame retardation without using chlorine nor bromine and also possesses long-term heat stability and smells little. The composition comprises (A) 50 to 95 parts by weight of a polycarbonate resin and (B) 5 to 50 parts by weight of a thermoplastic polyester resin, contains (C) 0.1 to 5 parts by weight, per 100 parts by weight of the total amount of (A) and (B), of coated stabilized red phosphorus and preferably contains (D) 0.1 to 100 parts by weight, per 100 parts by weight of the total amount of (A) and (B), of a silicate compound.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: December 11, 2001
    Assignee: Kaneka Corporation
    Inventors: Kazuaki Matsumoto, Tadashi Koyama, Yoshitaka Ono, Katsutoyo Fujita, Yoichi Ohara, Kazushi Hirobe
  • Publication number: 20010012865
    Abstract: The invention relates to a flame-retardant thermoplastic resin composition having incorporated therein a trace of stabilized red phosphorus, which achieves both improvement of heat resistance and flame retardation without using chlorine nor bromine and also possesses long-term heat stability and smells little. The composition comprises (A) 50 to 95 parts by weight of a polycarbonate resin and (B) 5 to 50 parts by weight of a thermoplastic polyester resin, contains (C) 0.1 to 5 parts by weight, per 100 parts by weight of the total amount of (A) and (B), of coated stabilized red phosphorus and preferably contains (D) 0.1 to 100 parts by weight, per 100 parts by weight of the total amount of (A) and (B), of a silicate compound.
    Type: Application
    Filed: October 6, 1998
    Publication date: August 9, 2001
    Applicant: KANEKA CORPORATION
    Inventors: KAZUAKI MATSUMOTO, TADASHI KOYAMA, YOSHITAKA ONO, KATSUTOYO FUJITA, YOICHI OHARA, KAZUSHI HIROBE
  • Patent number: 6174943
    Abstract: A flame retarded thermoplastic resin composition comprising (R) a thermoplastic resin comprising (A) a polycarbonate resin and (B) an aromatic polyester resin in an (A)/(B) ratio of 99/1 to 50/50 by weight, and per 100 parts by weight of the thermoplastic resin (R), (C) 0.5 to 100 parts by weight of a silicate compound and (D) 0.5 to 30 parts by weight of an organic phosphorus based flame retarder. The composition can exhibit excellent flame resistance and anti-drip property without containing a halogen atom and, moreover, has excellent properties such as heat resistance, mechanical strength, solvent resistance, surface property of moldings, and dimensional stability.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: January 16, 2001
    Assignee: Kaneka Corporation
    Inventors: Kazuaki Matsumoto, Tadashi Koyama, Yoshitaka Ono, Katsutoyo Fujita, Yoichi Ohara, Kazushi Hirobe