Patents by Inventor Shoichi Bando

Shoichi Bando 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: 6183629
    Abstract: Use is made of a high-speed agitator comprising vessel 2 rotated at a low speed and bladed agitating element 3 rotated at a high speed in direction reverse to that of the vessel 2, the bladed agitating element 3 having a rotary axis arranged parallel to, and located apart from, the rotary axis of the vessel 2. Petroleum residuum such as solvent deasphalting residuum is agitated together with a grinding auxiliary and water in the high-speed agitator so that the petroleum residuum is ground. Thereafter, a dispersant is added thereto to form a slurry and the viscosity thereof is adjusted to a given value. A stabilizer is further added thereto to obtain a stable slurry. The dispersant and the stabilizer may be placed in the high-speed agitator prior to the grinding of the petroleum residuum. Thus, there is provided a process in which a high-concentration petroleum residuum-water slurry with a desirable particle size distribution, being cheap and highly stable, can easily be obtained by a one-stage grinding.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: February 6, 2001
    Assignee: JGC Corporation
    Inventors: Shoichi Bando, Makoto Inomata
  • Patent number: 6117305
    Abstract: Disclosed is a method of producing water slurry of SDA asphaltene by dispersing residue resulting from solvent deasphalting of petroleum vacuum residue produced in refineries, which has low viscosity even at a high solid concentration and is stable for a long period of time, in industrial scale under stable operation. The method comprises a grinding step of grinding the SDA asphaltene with water in a grinding apparatus in the presence of a dispersing agent, followed by a stabilizing step of stirring the resulting slurry to stabilize it. In the grinding step a suitable amount of a thickener such as carboxymethyl cellulose is added. Grinding is preferably carried out at a temperature not higher than C. Jacketed ball mills are conveniently used. In the stabilizing step a stabilizer such as Attapulgus clay is added after stirring the slurry to decrease viscosity thereof and stirring is continued.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: September 12, 2000
    Assignee: JGC Corporation
    Inventors: Shoichi Bando, Takao Takinami, Makoto Inomata
  • Patent number: 5435938
    Abstract: Electrolytes are attached to fluorescent particle surfaces to prevent open spots in cathode-ray tube coatings dried at high temperatures. Electrolytes that are sulfates, nitrates, or chlorides of alkali or alkaline-earth metals are added to a liquid suspension of fluorescent particles which have passed through a cleaning step. Electrolytes are added to the suspension to make the conductivity of the clear top liquid greater than 30 .mu..OMEGA..sup.-1 cm.sup.-1. The fluorescent particle preparation process is finished with a final dehydration and drying step.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: July 25, 1995
    Assignee: Nichia Chemical Industries, Ltd.
    Inventors: Shoichi Bando, Yoshikatsu Aihara
  • Patent number: 5366834
    Abstract: In a cathode-ray tube phosphor, a layer consisting of a substantially uniform SiO.sub.2 film or an organic film consisting essentially of at least one type of a polymer selected from the group consisting of an acrylic resin, gelatin, alginic acid, chitosan, and a urea resin is formed as a first layer on the surface of a phosphor particle, and a layer containing at least one type of a metal selected from the group consisting of Zn, Al, and an alkali earth metal and at least one member selected from the group consisting of a colloidal silica, an alumina sol, and a titania sol each having a particle size of 50 nm or less is formed as a second layer on the first layer. This phosphor is excellent in oxidation resistance and dispersibility.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: November 22, 1994
    Assignee: Nichia Kagaku Kogyo K.K.
    Inventors: Masahiro Yoneda, Shoichi Bando, Ichiro Takeoka
  • Patent number: 5336080
    Abstract: A cathode-ray tube phosphor is manufactured by coating, on the surfaces of phosphor particles, a mixture of a metal alginate containing at least one type of a metal selected from the group consisting of Zn, Al, and an alkali earth metal and at least one type of a water-soluble binder selected from the group consisting of gum arabic, gelatin, polymethacrylamide, and polyvinyl alcohol.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: August 9, 1994
    Assignee: Nichia Chemical Industries, Ltd.
    Inventors: Miyuki Sumitomo, Ichiro Takeoka, Shoichi Bando
  • Patent number: 5330791
    Abstract: A method of reclaiming a phosphor from a recovered phosphor slurry containing carbon, a bichromate, and polyvinyl alcohol, comprises, (a) a decomposition treatment step of adding an alkali to the recovered phosphor slurry after the slurry is heated to prepare a phosphor suspension having an alkali concentration of 0.5N or less in the slurry, and adding an oxidizing agent in an amount of 1.0 to 20.0 wt % with respect to a dry solid component of the suspension, (b) a weak acid treatment step of separating a phosphor from the suspension, and adding a weak acid to a suspension obtained by adding water to the separated phosphor, thereby adjusting a pH to be 3.0 to 5.0, and (c) a surface treatment step of treating the surface of the phosphor separated from the suspension.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: July 19, 1994
    Assignee: Nichia Kagaku Kogyo K.K.
    Inventors: Yoshikatsu Aihara, Tomokazu Suzuki, Yoshiaki Shizuki, Shoichi Bando, Katsunori Uchimura
  • Patent number: 5185207
    Abstract: In a phosphor for a cathode-ray tube, a composition containing SiO.sub.2 and at least one element selected from the group consisting of indium, zirconium, and antimony is adhered on the surfaces of phosphor particles.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: February 9, 1993
    Assignee: Nichia Kagaku Kogyo K.K.
    Inventors: Misa Furuoka, Shoichi Bando, Akio Fujii