Patents by Inventor Hideo Futamata

Hideo Futamata 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: 5849073
    Abstract: A pigment for sensing gas leakage can be produced by adding at least one of salts of platinum group metals to a slurry of particulate substrate, neutralizing the resultant mixture to deposit at least one of oxides, hydroxides and hydrated oxides of platinum group metals on the surfaces of said particulate substrate, and if necessary, further adding to said slurry at least one of compounds of aluminum, silicon, titanium, zinc, zirconium, tin, antimony and cerium, neutralizing the resultant mixture to deposit at least one of compounds such as oxides, hydroxides and hydrated oxides of aluminum, silicon, titanium, zinc, zirconium, tin, antimony and cerium, on the particles.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: December 15, 1998
    Assignees: Ishihara Sangyo Kaisha, Ltd., Act Research, Inc.
    Inventors: Masashi Sakamoto, Haruo Okuda, Hideo Futamata
  • Patent number: 5837050
    Abstract: Ultrafine iron-containing rutile type titanium dioxide particles useful for UV shielding cosmetics, pharmaceutical compositions and UV shielding paints are disclosed. They are rutile type crystalline titanium dioxide particles having an average single particle size of 0.01 to 0.1 .mu.m and containing an iron component at a concentration of 1 to 15% by weight as expressed as Fe based on the titanium dioxide in the crystalline structure. They can be produced by using a fine titania sol comprising rutile crystallites as basic particles, precipitating iron oxide or hydrated iron oxide onto the surfaces of the titania particles to effect coating, then firing and grinding.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: November 17, 1998
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Haruo Okuda, Hideo Futamata, Akihito Sakai, Masakazu Hattori
  • Patent number: 5714260
    Abstract: Ultrafine iron-containing rutile type titanium dioxide particles useful for UV shielding cosmetics, pharmaceutical compositions and UV shielding paints are disclosed. They are rutile type crystalline titanium dioxide particles having an average single particle size of 0.01 to 0.1 .mu.m and containing an iron component at a concentration of 1 to 15% by weight as expressed as Fe based on the titanium dioxide in the crystalline structure. They can be produced by using a fine titania sol comprising rutile crystallites as basic particles, precipitating iron oxide or hydrated iron oxide onto the surfaces of the titania particles to effect coating, then firing and grinding.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: February 3, 1998
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Haruo Okuda, Hideo Futamata, Akihito Sakai, Masakazu Hattori
  • Patent number: 5705098
    Abstract: The invention provides acicular electroconductive tin oxide fine particles which has a mean diameter of 0.005-1 .mu.m and a mean length of 0.05-10 .mu.m and an aspect ratio of 3 or higher. The invention further provides a process for producing the acicular electroconductive tin oxide fine particles, which comprises firing a starting material containing tin, silicon and an alkali metal halide at 700.degree.-1200.degree. C and removing soluble salts from the resulting fired product.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: January 6, 1998
    Assignee: Ishihara Sanayo Kaisha, Ltd.
    Inventors: Haruo Okuda, Hideo Futamata, Hideo Takahashi, Norihiko Sanefuji
  • Patent number: 5575957
    Abstract: The invention provides acicular electroconductive tin oxide fine particles which has a mean diameter of 0.005-1 .mu.m and a mean length of 0.05-10 .mu.m and an aspect ratio of 3 or higher. The invention further provides a process for producing the acicular electroconductive tin oxide fine particles, which comprises firing a starting material containing tin, silicon and an alkali metal halide at 700.degree.-1200.degree. C. and removing soluble salts from the resulting fired product.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: November 19, 1996
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Haruo Okuda, Hideo Futamata, Hideo Takahashi, Norihiko Sanefuji
  • Patent number: 4405376
    Abstract: This invention provides a titanium dioxide pigment improved in durability and dispersibility which a comprises pigmentary titanium dioxide core particle, an inner coating of hydrous oxides of tin and zirconium and an outer coating of hydrous oxide of aluminum, and a process for producing said titanium dioxide pigment.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: September 20, 1983
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Mamoru Matsunaga, Teruo Usami, Haruo Okuda, Hideo Futamata