Patents by Inventor Hitoshi INENAGA

Hitoshi INENAGA 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).

  • Mixing and stirring device, method, and method for manufacturing lightweight gypsum board, including chute with eccentric orifice passage
    Patent number: 9856168
    Abstract: Turning motion of gypsum slurry spouting onto a sheet of paper for a gypsum board liner is restricted for preventing maldistribution, deviation or irregular dispersion from occurring in the density distribution of the slurry on the sheet of paper. A mixing and stirring device for gypsum slurry has a circular casing forming a mixing area, a rotary disc positioned in the casing, and a tubular passage for feeding the slurry onto the sheet of paper for the gypsum board liner. A chute has a fluid passage portion with its cross section being non-axisymmetric with respect to a center axis of the tubular passage, or a fluid passage portion varying a position of the center axis of the tubular passage by a change or lateralization of the cross section of fluid passage.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: January 2, 2018
    Assignee: YOSHINO GYPSUM CO., LTD.
    Inventors: Yasutoshi Ueno, Hitoshi Inenaga, Yutaka Matsuzaki
  • MIXING AND STIRRING DEVICE, MIXING AND STIRRING METHOD, AND METHOD FOR MANUFACTURING LIGHTWEIGHT GYPSUM BOARD
    Publication number: 20150315074
    Abstract: Turning motion of gypsum slurry spouting onto a sheet of paper for a gypsum board liner is restricted for preventing maldistribution, deviation or irregular dispersion from occurring in the density distribution of the slurry on the sheet of paper. A mixing and stirring device for gypsum slurry has a circular casing forming a mixing area, a rotary disc positioned in the casing, and a tubular passage for feeding the slurry onto the sheet of paper for gypsum board liner. A chute has a fluid passage portion with its cross section being non-axisymmetric with respect to a center axis of the tubular passage, or a fluid passage portion varying a position of the center axis of the tubular passage by means of change or lateralization of the cross section of fluid passage.
    Type: Application
    Filed: November 27, 2013
    Publication date: November 5, 2015
    Applicant: YOSHINO GYPSUM CO., LTD.
    Inventors: Yasutoshi UENO, Hitoshi INENAGA, Yutaka MATSUZAKI