Patents Assigned to Seikosha Co., Ltd.
  • Data storage control device
    Patent number: 5291456
    Abstract: A data storage control device including a DRAM and a storage device has an address bus common to the DRAM and the storage device, and a control device for selectively applying an address signal relating to the DRAM and another address signal relating to the storage device to the address bus.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: March 1, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Koichi Sugino
  • Flash synchronizing device
    Patent number: 5291237
    Abstract: A camera has a shutter which may also constitute a diaphragm. In a multi-flash mode the shutter selectively has a maximum aperture at an onset or at the end of the time base. The flash occurs in synchronism with a shutter waveform shaped by this aperture area and a time base element. In a second embodiment, a second diaphragm setting circuit is provided, in diaphragm priority photography, for computing a measurement value of a distance to a subject and a second diaphragm value from the guide number during an emission of flashed light. The diaphragm is set to the computed second diaphragm value, ad an electronic flash is energized with a desired aperture area. The diaphragm is set to an initial value to effect the photography at a time other than during the emission of flashed light. A timing circuit may be provided for setting the diaphragm to the second diaphragm value.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: March 1, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Shigeru Tagami, Tomihiko Aoyama, Teruyo Hayakawa, Hiroshi Yamazaki, Yuji Nakajima, Seiichi Imano
  • Desk top cleaner
    Patent number: 5285549
    Abstract: A desk top cleaner for cleaning dust from the top of a table includes a crankshaft rotatably supported in a frame. A broom is formed with an elongated slot to engage with the crankshaft and has its upper end portion fitted in a supporting portion formed in the frame and its lower end portion equipped with a brush. A drive mechanism is provided for transmitting a rotating force from a drive source to the crankshaft. A dust case for accommodating the dust swept by the broom is included in the frame.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: February 15, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Keiichi Yoshizawa
  • Clock
    Patent number: D344025
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: February 8, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Katsumi Shimamura
  • Clock
    Patent number: D344027
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: February 8, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Katsumi Shimamura
  • Clock
    Patent number: D344459
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: February 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Hisako Sugano
  • Watch band
    Patent number: D344468
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: February 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Clock
    Patent number: D344899
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: March 8, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Mitsuo Wada, Mariko Minami
  • Clock
    Patent number: D344900
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: March 8, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Yoshimi Tamura
  • Watch dial
    Patent number: D345115
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 15, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Clock
    Patent number: D345307
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: March 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Mitsuo Wada, Mariko Minami
  • Watch dial
    Patent number: D345318
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D345319
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D345320
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D345321
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Clock
    Patent number: D345508
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: March 29, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Asao Takashima
  • Watch dial
    Patent number: D345523
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 29, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D345524
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 29, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D345527
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: March 29, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Akie Ito
  • Printing head of a printer for a computer
    Patent number: D345576
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: March 29, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Yuichi Yamakawa