Patents by Inventor Jun Saitou

Jun Saitou 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: 6701750
    Abstract: On molding a glass product by pressing a glass gob by the use of a mold composed of upper and lower dies each of which has a molding surface, a molten glass is supplied as the glass gob onto the molding surface of the lower die. Cooling is carried out for an upper surface of the glass gob supplied onto the molding surface of the lower die. After the cooling, heat radiation suppression is carried out to suppress heat radiation from the glass gob so that an inner part and an upper part of the glass gob are close in temperature to each other. Thereafter; the glass gob is pressed by the molding surfaces of the upper and the lower dies when the glass gob has a viscosity within a range between 103.5 and 106.5 poises (dPa·s). Preferably, the heat radiation suppression is carried out by making a heat shielding member lower in temperature than the inner part of the glass gob approach the upper part of the glass gob in a non-contact state.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: March 9, 2004
    Assignee: Hoya Corporation
    Inventors: Nobuhiro Maeda, Jun Saitou
  • Publication number: 20020046577
    Abstract: On molding a glass product by pressing a glass gob by the use of a mold composed of upper and lower dies each of which has a molding surface, a molten glass is supplied as the glass gob onto the molding surface of the lower die. Cooling is carried out for an upper surface of the glass gob supplied onto the molding surface of the lower die. After the cooling, heat radiation suppression is carried out to suppress heat radiation from the glass gob so that an inner part and an upper part of the glass gob are close in temperature to each other. Thereafter; the glass gob is pressed by the molding surfaces of the upper and the lower dies when the glass gob has a viscosity within a range between 103.5 and 106.5 poises (dPa·s). Preferably, the heat radiation suppression is carried out by making a heat shielding member lower in temperature than the inner part of the glass gob approach the upper part of the glass gob in a non-contact state.
    Type: Application
    Filed: August 31, 2001
    Publication date: April 25, 2002
    Applicant: HOYA CORPORATION
    Inventors: Nobuhiro Maeda, Jun Saitou
  • Patent number: 5584118
    Abstract: A production control system is disclosed which comprises a plurality of processing apparatuses each thereof including a single cell or a plurality of identical cells, a storage for temporarily storing objects to be processed, a transportation facility for transporting the objects to be processed between the cells or between the cell and the storage, a plurality of cell controllers each thereof controlling each cell, a physical distribution control system for controlling the transportation facility, and a charge control system for issuing a transportation command to the physical distribution system in response to a request for sending in and a request for taking out from the cell controllers as well as a notice of completion of transportation from the physical distribution control system.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: December 17, 1996
    Assignee: Fujitsu Limited
    Inventors: Satomi Furukawa, Shozo Suzuki, Yuuji Seki, Jun Saitou