Patents by Inventor Shizuo Saito

Shizuo Saito 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: 7988258
    Abstract: A line-type liquid ejecting head includes an ejection unit group constituted by a plurality of ejection units each including a plurality of nozzle openings through which droplets of liquid are ejected, a pressure chamber communicating with the nozzle openings, and a pressure generator capable of generating a pressure change in the liquid in the pressure chamber, the liquid being supplied from a liquid source through a liquid supply channel to the pressure chambers and being ejected through the nozzle openings in a form of droplets by the pressure generators. The ejection unit group is sectioned into a plurality of unit blocks each constituted by a plurality of sets of the ejection units. Each of the unit blocks is provided with a block common channel, a distribution channel communicating with the liquid supply channel and the block common channel, and individual supply channels extending from the block common channel to the pressure chambers of the ejection units.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: August 2, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Shizuo Saito
  • Publication number: 20080174633
    Abstract: A line-type liquid ejecting head includes an ejection unit group constituted by a plurality of ejection units each including a plurality of nozzle openings through which droplets of liquid are ejected, a pressure chamber communicating with the nozzle openings, and a pressure generator capable of generating a pressure change in the liquid in the pressure chamber, the liquid being supplied from a liquid source through a liquid supply channel to the pressure chambers and being ejected through the nozzle openings in a form of droplets by the pressure generators. The ejection unit group is sectioned into a plurality of unit blocks each constituted by a plurality of sets of the ejection units. Each of the unit blocks is provided with a block common channel, a distribution channel communicating with the liquid supply channel and the block common channel, and individual supply channels extending from the block common channel to the pressure chambers of the ejection units.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 24, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shizuo SAITO
  • Patent number: 4897379
    Abstract: The invention relates to N-[N.sup..alpha. -(1(S)-carboxy-3-cyclohexylpropyl)-L-lysyl]-N-cyclopentylglycine which is useful as antihypertensives.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: January 30, 1990
    Assignee: Asahi Breweries Ltd.
    Inventors: Shizuo Saito, Motoshi Watanabe, Shuji Fukushima, Shinichi Matsui
  • Patent number: 4897483
    Abstract: This invention relates to novel amino acid derivatives which are useful as angiotension converting enzyme inhibitors.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: January 30, 1990
    Assignee: Asahi Breweries Ltd.
    Inventors: Shizuo Saito, Motoshi Watanabe, Toshiaki Waga, Shinichi Matsui
  • Patent number: 4422084
    Abstract: A vessel for storing fluid and a device for detecting remaining fluid in the vessel is provided. The vessel is maintained at a pressure less than atmospheric, but in a range not sufficient to overcome the surface tension of fluid remaining in a nozzle. This prevents fluid from escaping out from the nozzle when the tank is maintained at a height equal to or higher than the nozzle orifice. The tank may be formed from an elastic material or may include a biasing member for maintaining the negative pressure. An ink jet printer including an ink tank maintained at a pressure less than atmospheric main include a device for detecting ink remaining in the tank. Opposing walls of the tank may be conductive and upon consumption of ink therein collapse causing a circuit to short for indicating lack of ink in the tank. Alternatively, the device for detecting the remaining ink may include a conductive member mounted on the periphery of the tank which is displaced as the tank collapses.
    Type: Grant
    Filed: November 5, 1980
    Date of Patent: December 20, 1983
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventor: Shizuo Saito
  • Patent number: 4355100
    Abstract: A color photographic material having a light-sensitive silver halide emulsion layer containing a DIR compound having an amino group and a DIR compound having no amino group.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: October 19, 1982
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Sugita, Shizuo Saito, Ryosuke Sato, Kiyoshi Yamashita
  • Patent number: 4252893
    Abstract: A photographic material having a light-sensitive silver halide emulsion layer coated on a support. The material contains a compound represented by the following general formula [Ia] or [Ib] ##STR1## wherein R.sub.1 and R.sub.3 individually represent an alkyl, alkenyl or acyl group; R.sub.4 represents a halogen atom, an alkyl, alkenyl, cycloalkyl or cyano group, or --SO.sub.2 R.sub.5 or --COR.sub.5 group; and R.sub.5 represents a hydrogen atom, a hydroxy, alkyl, alkoxy, cycloalkoxy, aryloxy or amino group.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: February 24, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Iwamuro, Kenichiro Okaniwa, Takashi Sasaki, Shizuo Saito, Eiichi Sakamoto
  • Patent number: 4171975
    Abstract: A silver halide emulsion containing an aldehydebis type magenta coupler and an amide compound.
    Type: Grant
    Filed: February 7, 1978
    Date of Patent: October 23, 1979
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuo Kato, Shizuo Saito, Hidenori Kawaguchi
  • Patent number: 4037931
    Abstract: A liquid crystal display cell driving circuit adapted to apply a stabilized DC drive voltage having a temperature characteristic corresponding to the temperature characteristic of the display cell is provided. A power source includes a DC converter coupled to the display cell for applying a DC drive voltage thereto. A feedback control circuit is coupled to the DC converter for stabilizing the DC drive voltage. The feedback control circuit further includes a temperature dependent reference voltage means, for effecting a temperature adjustment of the DC drive voltage corresponding to the temperature characteristic of the liquid crystal display cell.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: July 26, 1977
    Assignees: Kabushiki Kaisha Suwa Seikosha, Shinshu Seiki Kabushiki Kaisha
    Inventors: Kazuo Ido, Shizuo Saito
  • Patent number: 3951661
    Abstract: Substances of the structure ##EQU1## wherein Z is phosphorus, X.sup.-is Cl.sup.-, Br.sup.-, ClO.sub.2 .sup.- or BF.sub.4 .sup.-, and R.sub.1 - R.sub.4 are alkyl or aromatic groups are excellent inhibitors of fog formation when incorporated in photographic emulsions containing silver halides.
    Type: Grant
    Filed: May 24, 1974
    Date of Patent: April 20, 1976
    Assignees: Konishiroku Photo Industry Co., Sankyo Company Limited
    Inventors: Nobuo Soma, Isao Kawamoto, Tomio Nakajima, Sadao Sugita, Tsuneo Wada, Shizuo Saito, Hiroyuki Inokuma, Koichi Horigome, Yukio Morifuji
  • Patent number: RE31893
    Abstract: A color photographic material having a light-sensitive silver halide emulsion layer containing a DIR compound having an amino group and a DIR compound having no amino group.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: May 21, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Sugita, Shizuo Saito, Ryosuke Sato, Kiyoshi Yamashita