Patents by Inventor Masaki Takao

Masaki Takao 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).

  • Patent number: 12157796
    Abstract: A method for producing a decolorized polyester according to the present invention includes: a step of preparing a polyester colored with a colorant, and a decolorizing agent containing a glycol ether-type compound having a boiling point at atmospheric pressure of 160° C. or higher; and a step of removing the colorant, by bringing the decolorizing agent into contact at least once with the colored polyester while heating the decolorizing agent to a temperature equal to or lower than a melting point of the polyester, to thereby obtain the decolorized polyester.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: December 3, 2024
    Assignees: SHINTECH CORPORATION, JEPLAN, INC.
    Inventors: Masaki Takao, Toru Sakai, Hiroshi Fujita, Shuji Inada
  • Publication number: 20220169786
    Abstract: A method for producing a decolorized polyester according to the present invention includes: a step of preparing a polyester colored with a colorant, and a decolorizing agent containing a glycol ether-type compound having a boiling point at atmospheric pressure of 160° C. or higher; and a step of removing the colorant, by bringing the decolorizing agent into contact at least once with the colored polyester while heating the decolorizing agent to a temperature equal to or lower than a melting point of the polyester, to thereby obtain the decolorized polyester.
    Type: Application
    Filed: April 15, 2019
    Publication date: June 2, 2022
    Applicants: SHINTECH CORPORATION, JEPLAN, INC.
    Inventors: Masaki TAKAO, Toru SAKAI, Hiroshi FUJITA, Shuji INADA
  • Patent number: 9522991
    Abstract: The invention relates to a cellulose solution manufacturing method including: performing an ozonation treatment to bring a cellulose-containing material and ozone into contact with each other; and performing an alkali treatment to bring the obtained treated material and an alkali aqueous solution into contact with each other, thereby dissolving at least cellulose in the cellulose-containing material brought into contact with the ozone in the alkali aqueous solution. According to the invention, it is possible to provide a method of manufacturing a cellulose solution in which cellulose can be dissolved in a more simple manner, a method of manufacturing a cellulose precipitate in which cellulose can be recovered from the cellulose solution, and a method of saccharifying cellulose which uses the cellulose precipitate.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: December 20, 2016
    Assignees: EHIME PREFECTURAL GOVERNMENT, SEKISUI CHEMICAL CO., LTD.
    Inventors: Kenji Nakamura, Seiji Higaki, Manami Yatsuzuka, Kazuo Doyama, Kazuyoshi Iwane, Masaki Takao
  • Patent number: 8991429
    Abstract: A pilot valve assembly comprised of a pilot valve proper employing a spool to be displaced in a valve casing to bring a hydraulic pressure port and an output port into and out of communication with each other, an operation means having an operating lever with a cam member attached thereto, a pivoting shaft erected on an end plate of the pilot valve proper and connected with the manual operating lever through a universal joint, and a boot of a resilient material hermetically connected between the operation means and the end plate in such a way as to completely enshroud said universal joint, cam member and pusher, the end plate being detachably fixed to the mount member, and the boot having one end thereof connected to the operation means and having the other end hermetically gripped between the end plate and the mount member.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 31, 2015
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Mitsuhiro Yoshimoto, Hideaki Itou, Sakurako Hirano, Masaki Takao
  • Publication number: 20130177948
    Abstract: The invention relates to a cellulose solution manufacturing method including: performing an ozonation treatment to bring a cellulose-containing material and ozone into contact with each other; and performing an alkali treatment to bring the obtained treated material and an alkali aqueous solution into contact with each other, thereby dissolving at least cellulose in the cellulose-containing material brought into contact with the ozone in the alkali aqueous solution. According to the invention, it is possible to provide a method of manufacturing a cellulose solution in which cellulose can be dissolved in a more simple manner, a method of manufacturing a cellulose precipitate in which cellulose can be recovered from the cellulose solution, and a method of saccharifying cellulose which uses the cellulose precipitate.
    Type: Application
    Filed: September 22, 2011
    Publication date: July 11, 2013
    Inventors: Kenji Nakamura, Seiji Higaki, Manami Yatsuzuka, Kazuo Doyama, Kazuyoshi Iwane, Masaki Takao
  • Publication number: 20110284785
    Abstract: A pilot valve assembly comprised of a pilot valve proper employing a spool to be displaced in a valve casing to bring a hydraulic pressure port and an output port into and out of communication with each other, an operation means having an operating lever with a cam member attached thereto, a pivoting shaft erected on an end plate of the pilot valve proper and connected with the manual operating lever through a universal joint, and a boot of a resilient material hermetically connected between the operation means and the end plate in such a way as to completely enshroud said universal joint, cam member and pusher, the end plate being detachably fixed to the mount member, and the boot having one end thereof connected to the operation means and having the other end hermetically gripped between the end plate and the mount member.
    Type: Application
    Filed: February 2, 2010
    Publication date: November 24, 2011
    Inventors: Mitsuhiro Yoshimoto, Hideaki Itou, Sakurako Hirano, Masaki Takao
  • Patent number: 4004211
    Abstract: In a compound AC generator having at least one pair of magnetic poles, series field windings wound on the magnetic poles, respectively, and at least one shunt field winding wound on at least one of the pair of magnetic poles in layers with the series field winding wound thereon, the series field winding wound in layers with the shunt field winding is associated with means for blocking the current flow through the series field winding in a direction to increase the magnetic fluxes through the associated magnetic pole thereby to minimize the effects of pulsating field current through the shunt field winding and to stabilize the output of the generator.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: January 18, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Masaki Takao, Hideo Tatsumi