Patents by Inventor Yoji Fujiura

Yoji Fujiura 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: 6303711
    Abstract: The present invention can provide a water-absorbent or water-retention material comprising water-absorbent resin derived from monomer unit components comprising 40 to 99 wt. % of hydroxyl alkyl (meth)acrylate, 1 to 60 wt. % of (meth)acrylic acid and/or alkali metal salt thereof and 0.00001 to 3 wt. % of crosslinking agent; and a water-absorbent or water-retention material comprising water-swellable polymer which is obtained by further thermally crosslinking a particles of partially alkaline neutralized product of a copolymer of 20 to 99 mol % of acrylamide and 1 to 80 mol % of acrylic acid. The water-absorbent or water-retention material of the present invention is not readily subject to an influence of salts, and the absorbency does not deteriorate with respect to an aqueous solution containing a great amount of metallic ion of salts.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: October 16, 2001
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Masami Koike, Yoji Fujiura, Mihoko Nomoto
  • Patent number: 6130304
    Abstract: The present invention can provide a water-absorbent or water-retention material comprising water-absorbent resin derived from monomer unit components comprising 40 to 99 wt. % of hydroxyl alkyl (meth)acrylate, 1 to 60 wt. % of (meth)acrylic acid and/or alkali metal salt thereof and 0.00001 to 3 wt. % of crosslinking agent; and a water-absorbent or water-retention material comprising water-swellable polymer which is obtained by further thermally crosslinking a particles of partially alkaline neutralized product of a copolymer of 20 to 99 mol % of acrylamide and 1 to 80 mol % of acrylic acid. The water-absorbent or water-retention material of the present invention is not readily subject to an influence of salts, and the absorbency does not deteriorate with respect to an aqueous solution containing a great amount of metallic ion of salts.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: October 10, 2000
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Masami Koike, Yoji Fujiura, Mihoko Nomoto
  • Patent number: 5904028
    Abstract: A diffusing device containing a fragrance or deodorant material includes a gel of a water swellable/water absorbing resin carrying the fragrance and/or deodorant components. The fragrance or deodorant release device can be readily produced on an industrial scale, is easy for a user to handle, and employs a water swellable/water absorbing resin. The gel is produced by enclosing a water swellable/water absorbing resin in a water resistant container, such as a packet, having a water permeable portion and immersing the packet into an aqueous medium containing the fragrance and/or deodorant components whereby the resin absorbs the fragrance and/or deodorant components.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: May 18, 1999
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yoji Fujiura, Yukio Zenitani
  • Patent number: 5838863
    Abstract: This invention relates to a cable whose inner opening space has been sealed with a polyurethane resin formed with a polyurethane resin-forming sealing material comprising components (A) and (B). (A): a component comprising a dispersion (1) of a water-insoluble water absorbent resin (D) or its hydrogel in a polyol (C), wherein said resin (D) is formed by polymerizing in the polyol (C) a water soluble monomer or its precursor and crosslinking agent and/or polysaccharide; and (B): a component comprising an organic polyisocyanate (2); and sealing process of the same. This invention provides a cables having an excellent water preventing property without the risk of falling-off of the sealing material at the time of cable connection.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: November 17, 1998
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yoji Fujiura, Yukio Zenitani, Masami Koike
  • Patent number: 5743213
    Abstract: The invention relates to a treating material for animal excretions comprising agglomerates of a powdery or short-fiber-like excretion treating base material and fine powder of water-absorbent resin sprinkled on the agglomerates, and also to a method of producing a treating material for animal excretions which comprises forming agglomerates from a powdery or short-fiber-like excretion base treating material using water and then, sprinkling fine powder of a water-absorbent resin on the agglomerates. The treating material for animal excretions according to the invention can quickly absorb moisture, and its surface is brought to a half dry condition soon after it absorbs urine. Thus, it is possible to prevent urine from being attached to the pet's fur and paw, and contaminating the room or the like. Further, by absorbing urine, the treating material becomes a rubber-like mass. Thus, only its portion having absorbed urine can be easily taken out and disposed.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: April 28, 1998
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventor: Yoji Fujiura
  • Patent number: 5664523
    Abstract: A material for treating excretions of pet animals which is obtainable by combining pulp (A), inorganic substance (B), guar gum (C) and optionally water-absorbent resin (D) to form guranules. The weight ratios of (A) to (B) to (C) to (D) is 15-55:15-55:5-40: 5-45.The treating material is capable of absorbing liquids from excretions quickly, forming into clumps when absorbing liquid and maintaining the shape of the clump even when handled for removal.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 9, 1997
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Kengo Ochi, Noriyuki Kimura, Yukio Zenitani, Masami Koike, Yoji Fujiura
  • Patent number: 5453323
    Abstract: Super-absorbent polymers having superior dryness properties when incorporated into absorbent articles are made from acrylic acid and crosslinking agent polymerized under controlled conditions.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: September 26, 1995
    Assignee: Hoechst Celanese Corporation
    Inventors: Douglas R. Chambers, Hubert H. Fowler, Jr., Yoji Fujiura, Fusayoshi Masuda
  • Patent number: 5145906
    Abstract: Super-absorbent polymers having superior dryness properties when incorporated into absorbent articles are made from acrylic acid and crosslinking agent polymerized under controlled conditions.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: September 8, 1992
    Assignee: Hoechst Celanese Corporation
    Inventors: Douglas R. Chambers, Hubert H. Fowler, Jr., Yoji Fujiura, Fusayoshi Masuda
  • Patent number: 5002986
    Abstract: This invention relates to fluid absorbent polymer compositions having the ability to absorb aqueous ionic fluids and water rapidly and efficiently. These fluid absorbent polymer compositions are prepared from fine base polymer particles which are ionically surface crosslinked and agglomerated into larger particles by the use of high energy mixing conditions. The fluid absorbent compositions of the invention find application in the preparation of absorbent articles such as diapers, sanitary napkins and incontinent devices.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: March 26, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Yoji Fujiura, Takashi Sumiya
  • Patent number: 4710298
    Abstract: Dewatering of sludge is accomplished by adding an organic fibrous material having the bulk specific gravity increased by being pressed or being wetted with water and a high molecular weight flocculant to the sludge, adjusting the resulting flocs to a diameter of not more than 1 mm, and subjecting the flocs to vacuum or pressure filtration.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: December 1, 1987
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Kimihiko Noda, Yoji Fujiura, Yoichi Hasegawa