Patents by Inventor Takeo Ito

Takeo Ito 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).

  • Publication number: 20040058148
    Abstract: This dispersion for preventing electrification contains as a primary component high-resistance fine particles having a specific resistivity of 106 to 109&OHgr;·cm. This dispersion is applied by a simple and easy method such as spray coating or brushing and baked to obtain an antistatic film having a reduced dependency of a resistance value on a thickness of a film and environments and having stable antistatic properties.
    Type: Application
    Filed: March 10, 2003
    Publication date: March 25, 2004
    Inventors: Takeo Ito, Tsuyoshi Oyaizu, Akira Mikami, Hitoshi Tabata
  • Patent number: 6699580
    Abstract: This dispersion liquid composition for black matrix comprises; manganese oxide having an average particle diameter in the range of 50 to 2000 nm, or solid solution of manganese oxide and ferric oxide having an average particle diameter in the range of 50 to 2000 nm and a manganese content in the range of 15 to 70% by weight; at least one kind of dispersing agent selected from a group of water-soluble acrylic resin, sodium salt, ammonium salt or potassium salt of water-soluble acrylic resin, and sodium salt, ammonium salt or potassium salt of polycarboxylic acid or ligninsulfonic acid or bisphenolsulfonic acid; and water, or a solvent mixture of water and an organic solvent compatible with water. By employing such a dispersion liquid composition for black matrix, light reflectivity of a light absorption layer of an interface with a panel is remarkably reduced.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: March 2, 2004
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Ito, Koji Washiyama, Hajime Tanaka, Tomoko Nakazawa, Tsuyoshi Oyaizu, Kazuo Sakai, Masaru Fukuda, Yoichi Inubushi
  • Patent number: 6670747
    Abstract: Phosphor layers are formed on the inner surface of a face plate. An electron source device that emits electrons to excite the phosphor layers is provided on the inner surface of a base plate. The electron source device comprises an alumina substrate that has a number of small through holes. Electron-emitting material is buried in the through holes. A reference electrode is formed on the lower surface of the alumina substrate and contacts the electron-emitting material. A gate electrode is formed on the upper surface of the substrate and insulated from the electron-emitting material. The gate electrode is configured to concentrate an electron field of the electron-emitting material by virtue of an voltage applied between the reference electrode and the gate electrode, thereby to cause the electron-emitting material to emit electrons toward the phosphor layers.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: December 30, 2003
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Ito, Sadao Miki, Kazuo Sakai
  • Publication number: 20030157317
    Abstract: A transparent film-coated substrate is provided which has a transparent film having a low refractive index, and a less shrinking property; and being excellent in adhesiveness to a substrate or a transparent electroconductive film formed on the substrate, and in the film strength, the water resistance, the chemical resistance, and so forth.
    Type: Application
    Filed: November 8, 2002
    Publication date: August 21, 2003
    Inventors: Takeo Ito, Hidemi Matsuda, Yoshimi Otami, Kazuhiko Yui, Toshiharu Hirai, Hiroyasu NIshida, MIchio Komatsu
  • Publication number: 20030132699
    Abstract: Phosphors for a display, which emit blue light and green light, comprise zinc sulfide phosphors having a crystal structure of a hexagonal system. The zinc sulfide phosphor which emits blue light has an average particle diameter in a range of (0.0169×VE1.9+2.49)±20%[&mgr;m] when an electron beam has an acceleration voltage VE. The zinc sulfide phosphor which emits green light has an average particle diameter in a range of (0.017×VE1.9+2.58)±20%[&mgr;m]. A phosphor for a display, which emits red light, comprises a yttrium oxysulfide phosphor or a yttrium oxide phosphor and has an average particle diameter in a range of (0.023×VE1.95+2.88)±20%[&mgr;m]. These phosphors for a display are used for a display which has an electron beam having an acceleration voltage of 3 kV to 15 kV as an excitation source.
    Type: Application
    Filed: October 10, 2002
    Publication date: July 17, 2003
    Inventors: Kenichi Yamaguchi, Kiyoshi Inoue, Susumu Matsuura, Takeo Ito
  • Publication number: 20030006696
    Abstract: A transfer film comprising a base film (11), a parting-agent layer (12), a protective film (13), and a metal film (14), the latter three being formed on the base film (11) in order, wherein the protective film (13) contains a softening agent such as a phosphate, an aliphatic monobasic acid ester, an aliphatic dibasic acid ester, or a dihydric alcohol ester. By using such a transfer film, a metal back layer is formed. Since the transfer layer of the transfer film has a surface resistivity of as high as 102-108 &OHgr;/, the surface resistivity of the formed metal back layer is high, and discharge is suppressed.
    Type: Application
    Filed: July 26, 2002
    Publication date: January 9, 2003
    Inventors: Takeo Ito, Hajime Tanaka, Tomoko Nakazawa, Taichiro Nakayama, Takaaki Shinohara, Yoichiro Nakayama, Kazuo Sakai
  • Patent number: 6416174
    Abstract: An ink composition having a pigment in its droplets, which are adhered onto the surface such as glass, ceramics or polyester resins of a base material, always dispersed uniformly is ejected from a nozzle by an ink-jet method to directly form a prescribed pattern of a colored layer of a color filter on the surface of the base material.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: July 9, 2002
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Ito, Kazuo Sakai, Hiroyuki Nakazumi
  • Patent number: 6403695
    Abstract: Novel carbon blacks having a CTAB of from 65 m2/g to 85 m2/g, a DBP of from 130 cc/100 g to 160 cc/100 g, a CTAB/I2 No. ratio of from 1.15 to 1.35, a &Dgr;DPB of from 20 cc/100 g to 40 cc/100 g, a Tint value of from 85 to 100, a Dmode of from 115 nm to 135 nm and a &Dgr;D50/Dmode ratio of from 0.65 to 0.90. Also disclosed are novel rubber compositions, incorporating the carbon blacks, having increased abrasion resistance and lower hysteresis.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: June 11, 2002
    Assignee: Cabot Corporation
    Inventors: Mizuo Soeda, Akimasa Arita, Takeo Ito, Kazue Watanabe
  • Publication number: 20020030438
    Abstract: Phosphor layers are formed on the inner surface of a face plate. An electron source device that emits electrons to excite the phosphor layers is provided on the inner surface of a base plate. The electron source device comprises an alumina substrate that has a number of small through holes. Electron-emitting material is buried in the through holes. A reference electrode is formed on the lower surface of the alumina substrate and contacts the electron-emitting material. A gate electrode is formed on the upper surface of the substrate and insulated from the electron-emitting material. The gate electrode is configured to concentrate an electron field of the electron-emitting material by virtue of an voltage applied between the reference electrode and the gate electrode, thereby to cause the electron-emitting material to emit electrons toward the phosphor layers.
    Type: Application
    Filed: November 23, 2001
    Publication date: March 14, 2002
    Inventors: Takeo Ito, Sadao Miki, Kazuo Sakai
  • Patent number: 6325901
    Abstract: At least an effective region of the face of a panel of a cathode ray tube is held within a vacuum chamber. After the vacuum chamber is hermetically sealed from the outside of the vacuum chamber, a thin film is formed on the face of the panel by using a film-forming means.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: December 4, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazumasa Hirayama, Hitoshi Takeda, Hisashi Iijima, Takeo Ito, Sakae Kimura, Hisashi Chigusa, Yoshimitsu Aramaki
  • Patent number: 6228928
    Abstract: New carbon blacks that when incorporated into rubber compositions impart increased abrasion resistance and lower hysteresis. Also disclosed are rubber composition incorporating the novel carbon blacks, which have nitrogen surface area of at least 100, a CDBP of at least 105, a tint of 90-140 and a delta D50/Dmode ratio of 0.6-0.76.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: May 8, 2001
    Assignee: Cabot Corporation
    Inventors: Mizuo Soeda, Yoichi Yuza, Takeo Ito, Kazue Watanabe, Ted W. Bush, Martin Green, John M. Branan, Jr.
  • Patent number: 5907008
    Abstract: A black coloring composition comprising, a black inorganic pigment formed of an oxide having an average particle diameter of 0.5 .mu.m or less and comprising at least one kind of metal s elected from metals belonging to Groups 4 to 11 and also to the fourth period, at least one kinds of dispersant selected from the group consisting of polyvinyl butyral resin represented by the following general formula (1), polyacrylic resin represented by the following general formula (2), and a higher carboxylic acid represented by the following general formula (3), and an organic solvent: ##STR1## wherein x=0.01 to 0.9, y.ltoreq.0.05, and n is an integer; ##STR2## wherein R.sup.1 is selected from hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group and a substituted or unsubstituted aromatic hydrocarbon group, R.sup.2 is selected from a substituted or unsubstituted aliphatic hydrocarbon group and a substituted or unsubstituted aromatic hydrocarbon group, R.sup.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: May 25, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiko Nakano, Shuji Hayase, Sawako Fujioka, Takeo Ito, Satoshi Mikoshiba, Hideo Hirayama
  • Patent number: 5882407
    Abstract: A coating die is disclosed, in which a slit-like spacing 29 is formed between a pair of die elements 25, 27 arranged in opposed relation to each other. A band-shaped electrode sheet 23 is movable along the length of the spacing 29. The sides of the slit-like spacing along the width of the electrode sheet 23 are enclosed. An electrode piling agent is supplied from an external source into the die element pair 25, 27 through supply flow paths 47, 49. Discharge ports 47a, 49a of the supply flow paths 47, 49 are open to the slit-like spacing 29. The portion of the spacing 29 downstream of the discharge ports 47a, 49a in the direction of movement of the electrode sheet 23 has a thickness equivalent to the thickness of the electrode sheet 23 plus the thickness of the electrode piling agent coated on the two sides of the electrode sheet 23. The portion of the spacing 29 upstream of the discharge ports 47a, 49a has a thickness substantially equal to the thickness of the electrode sheet 23.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: March 16, 1999
    Assignees: Toshiba Battery Co., Ltd., Toshiba Kikai Kabushiki Kaisha
    Inventors: Kazuta Takeno, Takeo Ito, Shigeo Kasahara, Gen Takayama, Hiroshi Kaneko, Yoshiyuki Sakai, Toshihiko Kusago, Katsuhiko Iguchi
  • Patent number: 5525444
    Abstract: An alkaline secondary battery is capable of inhibiting an increase of internal pressure in the charging/discharging cycles and extending life of charging/discharging cycles. This secondary battery comprises, a case, a paste-type positive electrode accommodated in the case and essentially consisting of a conductive substrate filled with a paste containing an active material and a binder, a negative electrode accommodated in the case, a separator interposed between the positive electrode and the negative electrode, and an alkaline electrolyte accommodated in the case, wherein the binder in the positive electrode contains a copolymer consisting of a vinyl alcohol unit and a unit having COOX group, wherein X is an element selected from the group consisting of hydrogen, alkaline metals and alkaline earth metals.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: June 11, 1996
    Assignee: Toshiba Battery Co., Ltd.
    Inventors: Takeo Ito, Eiichi Wakai, Katsuya Kumagai, Kunihiko Miyamoto
  • Patent number: 5520855
    Abstract: A coating solution composition for forming a glass gel thin film, contains at least one material selected from the group consisting of a metal alkoxide and a polycondensate of the metal alkoxide, a coloring material, an alcohol solvent, and a dispersant having an adsorption material for the coloring material, soluble in the alcohol solvent, and having miscibility with the metal alkoxide, wherein the coloring material has an average particle size of 3 nm to 300 nm. A glass gel thin film obtained by sintering this composition at a temperature of 100.degree. to 300.degree. C. is excellent in water resistance, durability and has a high strength.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: May 28, 1996
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Ito, Hidemi Matsuda, Kazuo Sakai
  • Patent number: 5494732
    Abstract: A magnetic recording medium having a nonmagnetic supporting member and a plurality of magnetic layers formed on at least one major surface of the nonmagnetic supporting member, comprising a first longitudinally oriented magnetic layer having a first longitudinally orientation rate located uppermost and comprising a hexagonal system ferromagnetic powder, and a second longitudinally oriented magnetic layer having a second longitudinally orientation rate located between the nonmagnetic supporting member and the first longitudinally oriented magnetic layer and comprising a needle-like crystal magnetic powder, wherein the first longitudinally orientation rate of the first longitudinally oriented magnetic layer is at least 0.5 and is smaller than the second longitudinally orientation rate of the second longitudinally oriented magnetic layer.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: February 27, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeo Ito, Hirotaka Yokoyama
  • Patent number: 5464566
    Abstract: A coating solution composition for forming a glass gel thin film, contains at least one material selected from the group consisting of a metal alkoxide and a polycondensate of the metal alkoxide, a coloring material, an alcohol solvent, and a dispersant having an adsorption material for the coloring material, soluble in the alcohol solvent, and having miscibility with the metal alkoxide, wherein the coloring material has an average particle size of 3 nm to 300 nm. A glass gel thin film obtained by sintering this composition at a temperature of 100.degree. to 300.degree. C. is excellent in water resistance, durability and has a high strength.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: November 7, 1995
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Ito, Hidemi Matsuda, Kazuo Sakai
  • Patent number: 5384182
    Abstract: A magnetic recording medium according to the invention comprises a first linear orientation magnetic layer (11) formed of capillary crystal ferromagnetic membrane and a second linear orientation magnetic layer (12) formed of hexagonal system ferromagnetic powder on the first linear orientation magnetic layer, the linear orientation rate of the second linear orientation magnetic layer (12) is smaller than that of the first linear orientation magnetic layer (11).
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: January 24, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeo Ito, Hirotaka Yokoyama
  • Patent number: 5217820
    Abstract: The high density slave magnetic recording media comprising on a non-magnetic substrate a magnetic recording layer coated with magnetic hexagonal ferrite powder along with a binder component to transfer the digital signals stored on the master magnetic recording media by the magnetic contact duplication process, is characterized in that the perpendicular squareness ratio of the magnetic recording layer is not less than 0.58 and is less than 0.7, center line average roughness Ra is not more than 0.01 .mu.m, and the number of convex projections whose pitches are 10 to 90 .mu.m and whose height is not less than 0.03 .mu.m pp (bottom to top) is not more than 10 per 1 mm of running direction. The slave magnetic recording media permits the functionally enough duplication efficiency of digital signals by the magnetic contact duplication process and can considerably curb the error rate during the reproduction of the duplicated digital signals.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: June 8, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masanori Isshiki, Toshiyuki Suzuki, Nobuyoshi Saito, Takeo Ito
  • Patent number: D313879
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: January 15, 1991
    Assignee: Kabushiki Kaisha Hoky
    Inventor: Takeo Ito