Patents by Inventor Hiroshi Ishiga

Hiroshi Ishiga 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: 6091719
    Abstract: When a mobile station is to be called by a fixed terminal device as a caller side, incoming call information containing the intermittent receiving cycle of the mobile station and a mobile station number is sent from a control station to a radio base station. A paging slot received by the mobile station is obtained based the mobile station number and the intermittent receiving cycle. The incoming call information is written in a buffer corresponding to the obtained paging slot in a paging slot table section. A transmission processing section calculates products between intermittent receiving cycles and numbers of holding times. A priority order for transmission is decided based on the calculated products. The mobile station numbers are packed in a paging message starting from the information high in the priority order.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: July 18, 2000
    Assignee: NEC Corporation
    Inventors: Seiji Kondo, Hiroshi Ishiga
  • Patent number: 5703433
    Abstract: Predetermined barrier ribs 2 are filled with three types of pastes of fluorescent substances 3 for R, G, and B by a screen printing method. Next, a sandblasting process is performed through a sandblasting mask 7. Thereafter, a sintering process is performed. Thus, fluorescent screens are formed on a glass substrate 1 and the wall surfaces of barrier ribs 2. As the sandblasting mask 7, a photoresist 4 is used. By a photolithographic method, a desired pattern of the sandblasting mask 7 can be used. In this manner, fluorescent screens can be formed on the wall surfaces of the barrier ribs as well as the glass substrate 1. The fluorescent screens formed on the wall surfaces of the barrier ribs are in such a parabolic shape that a discharging space defined by the fluorescent screen is widened toward a front plate 11.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: December 30, 1997
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideaki Fujii, Hiroshi Ishiga, Masatoshi Harayama, Motohiro Oka
  • Patent number: 5601468
    Abstract: Predetermined barrier ribs 2 are filled with three types of pastes of fluorescent substances 3 for R, G, and B by a screen printing method. Next, a sandblasting process is performed through a sandblasting mask 7. Thereafter, a sintering process is performed. Thus, fluorescent screens are formed on a glass substrate 1 and the wall surfaces of barrier ribs 2. As the sandblasting mask 7, a photoresist 4 is used. By a photolithographic method, a desired pattern of the sandblasting mask 7 can be used. In this manner, fluorescent screens can be formed on the wall surfaces of the barrier ribs as well as the glass substrate 1. The fluorescent screens formed on the wall surfaces of the barrier ribs are in such a parabolic shape that a discharging space defined by the fluorescent screen is widened toward a front plate 11.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: February 11, 1997
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideaki Fujii, Hiroshi Ishiga, Masatoshi Harayama, Motohiro Oka