Patents by Inventor Takashi Sumiya

Takashi Sumiya 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: 7470738
    Abstract: A non-aqueous absorbent comprising a crosslinked polymer which contains a structural unit having a carboxyl group and/or a sulfonate group in an amount of 20 to 100% weight in its molecule and in which from 30 to 100% by mol of the protons in the carboxyl group and/or the sulfonate group have been substituted by onium cations; a non-aqueous gel made of this non-aqueous absorbent and an organic solvent; and a non-aqueous absorbent sheet and a non-aqueous absorbent agent containing the non-aqueous absorbent.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: December 30, 2008
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Kazuya Ohtani, Takeaki Yamaguchi, Youji Fujiura
  • Patent number: 7314687
    Abstract: A gelatinizer for alkaline batteries, which comprises crosslinked polymer particles comprising, as one or more main constituting monomer units, (meth) acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 ?m, and a super fine particle form metal oxide having an average particle size of 0.1 to 100 nm; and an alkaline battery using the gelatinizer. The impact resistance of the battery, the discharge characteristic thereof, the lifespan thereof, and others are very good. The present invention can make the time for producing alkaline batteries short, and is useful for producing batteries containing none of materials harmful to the human body, such as benzene.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: January 1, 2008
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Takeaki Yamaguchi
  • Publication number: 20050136247
    Abstract: A non-aqueous absorbent comprising a crosslinked polymer which contains a structural unit having a carboxyl group and/or a sulfonate group in an amount of 20 to 100% weight in its molecule and in which from 30 to 100% by mol of the protons in the carboxyl group and/or the sulfonate group have been substituted by onium cations; a non-aqueous gel made of this non-aqueous absorbent and an organic solvent; and a non-aqueous absorbent sheet and a non-aqueous absorbent agent containing the non-aqueous absorbent.
    Type: Application
    Filed: December 24, 2002
    Publication date: June 23, 2005
    Inventors: Takashi Sumiya, Kazuya Ohtani, Takeaki Yamaguchi, Youji Fujiura
  • Publication number: 20040170900
    Abstract: A gelatinizer for alkaline batteries, which comprises crosslinked polymer particles (A) comprising, as one or more main constituting monomer units, (meth) acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 &mgr;m, and a super fine particle form metal oxide (1) having an average particle size of 0.1 to 100 nm; and an alkaline battery using the gelatinizer. The impact resistance of the battery, the discharge characteristic thereof, the lifespan thereof, and others are very good. The present invention can make the time for producing alkaline batteries short, and is useful for producing batteries containing none of materials harmful to the human body, such as benzene.
    Type: Application
    Filed: February 6, 2004
    Publication date: September 2, 2004
    Inventors: Takashi Sumiya, Takeaki Yamaguchi
  • Patent number: 6667133
    Abstract: A gelating agent for an alkaline cell is a cross-linked polymer (A) comprising (meth)acrylic acid and/or its alkali metal salt as a main constituent monomer unit and obtained by an aqueous solution polymerization or a reversed phase suspension polymerization and satisfies the following required conditions (1), (2). The gelating agent has good draining property, satisfactorily high speed charging property of the alkaline electrolytic solution and is therefore effective to produce cells with little unevenness of the charging amount of the electrolytic solution and having uniform quality by mass production and an alkaline cell using the gelating agent is provided with durable discharge time and remarkably excellent impact resistance for a long duration.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: December 23, 2003
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Masami Koike, Yukio Zenitani
  • 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: 6101077
    Abstract: An electrostatic protection circuit of a semiconductor device comprises a first MOS transistor of specific conductive type and a second MOS transistor of the specific conductive type. In the first MOS transistor, a drain thereof is connected to an output terminal or an input terminal and a source thereof is connected to a first power terminal and the first MOS transistor is controlled to be on/off by a signal received by a gate or ordinarily turned off by holding the gate at a specific potential. In the second MOS transistor of the specific conductive type, a drain thereof is connected to the output terminal or the input terminal and a source thereof is connected to a gate of the first MOS transistor and the second MOS transistor is ordinarily turned off by connecting a gate thereof to the first power terminal.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: August 8, 2000
    Assignee: Nippon Precision Circuits Inc.
    Inventors: Toru Matsumoto, Yasuaki Otaka, Takashi Sumiya
  • Patent number: 5882784
    Abstract: A metal-film laminate including a metal plate and a biaxially oriented polyester-group film laminated on the metal plate. The orientation degree of the film is controlled such that, when the thickness of the film is represented by T and the mean orientation degree of the film in the area from the metal-plate side surface to a position of T/2 in the thickness direction of the film is represented by X, the orientation degree of the film in the area from the metal-plate side surface to the position of T/2 is in the range of X.+-.0.5X and an orientation degree of the film at the non-metal-plate side surface is not less than 2X. When the metal-film laminate is processed by drawing etc., an excellent drawing property and an excellent impact resistance of an obtained metal-film laminated product can be achieved.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: March 16, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Takashi Sumiya, Iwao Tanaka, Kunio Shibatsuji, Hirokazu Kurome, Seiya Sugiura, Wataru Ooe
  • Patent number: 5724915
    Abstract: A material and a method for preparing the same for treating excretions of pet animals comprising: 100 parts by weight of substrate (A) selected from an inorganic powder, short organic fibers, crushed cellulose, or granulated forms thereof coated with from 5-300 parts by weight of a water-absorbent resin/fiber composite (B), the composite (B) being a mixture of a water-absorbent resin fine powder, a fibrous substance and optionally a hydrophilic thermoplastic substance.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: March 10, 1998
    Assignees: Sanyo Chemical Industries, Ltd., Uni-Charm Corporation
    Inventors: Kengo Ochi, Yuko Kawasaki, Takashi Sumiya, Yukio Zenitani
  • Patent number: 5698308
    Abstract: Disclosed is a polyester film for use of a laminate with a metal plate comprising a polyester=group resin containing a white pigment having a mean particle diameter of 0.01 to 1.8 .mu.m at a content of 10 to 30% by weight. The film has (a) a void ratio of 4 to 30%, (b) a melting peak temperature of 150.degree. to 245.degree. C., (c) an amount of oligomer of not more than 3% by weight and (d) an orientation degree of 0.7 to 4.0. When the film is laminated on a metal, it can indicate excellent light interruptive property, lamination property, forming property and processing property.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: December 16, 1997
    Assignee: Toray Industries, Inc.
    Inventors: Takashi Sumiya, Iwao Tanaka, Kunio Shibatsuji, Hirokazu Kurome, Seiya Sugiura, Wataru Ooe
  • Patent number: 5668078
    Abstract: The present invention relates to a process for producing improved water-absorbent resin particles comprising the step of treating water-absorbent particles, which are crosslinked polymers of ethylenically unsaturated monomers comprising acrylic acid and/or acrylic acid salt as an essential element, with a modified silicone oil having a functional group which can react with a carboxyl group and/or a carboxylate group in the molecule Improved water-absorbent resin particles obtained by the process have a hygroscopic blocking rate of 20 % or less under a relative humidity of 80 % at 40.degree. C., a dust level of 10 CPM or less and an absorbing characteristic of initial absorbency under load to physiological saline of 20 times or more. The present invention provides water-absorbent resin particles which have an improved hygroscopic blocking rate under high humidity and dust generation rate with a good initial absorbency under load and absorbing capacity.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 16, 1997
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Masanori Koike, Kenji Tanaka
  • Patent number: 5591518
    Abstract: Disclosed is a polyester film for use of a laminate with a metal plate comprising a polyester-group resin containing a white pigment having a mean particle diameter of 0.01 to 1.8 .mu.m at a content of 10 to 30% by weight. The film has (a) a void ratio of 4 to 30%, (b) a melting peak temperature of 150.degree. to 245.degree. C., (c) an amount of oligomer of not more than 3% by weight and (d) an orientation degree of 0.7 to 4.0. When the film is laminated on a metal, it can indicate excellent light interruptive property, lamination property, forming property and processing property.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: January 7, 1997
    Assignee: Toray Industries, Inc.
    Inventors: Takashi Sumiya, Iwao Tanaka, Kunio Shibatsuji, Hirokazu Kurome, Seiya Sugiura, Wataru Ooe
  • Patent number: 5384368
    Abstract: The present invention relates to a process for producing water absorbent resin comprising a step of adding a high-molecular crosslinking agent which has at least 2 azetidinium salt groups in the molecule and has at least 1000 weight-average molecular weight to the water absorbent resin paticles having carboxylic groups and carboxylic acid salt groups and a step of efficiently crosslinking the vicinity of the surface of the water absorbent resin particles. In the process for producing water absorbent resin according to the present invention, the use of high-molecular crosslinking agent achieves less permeation of the crosslinking agent into the water absorbent resin particles and enables efficient crosslinking of the vicinity of the surface of the water absorbent resin particles. Consequently, the water absorbent resin having high water absorbency both under pressure-free state and under loading can be manufactured.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: January 24, 1995
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masashi Date, Takashi Sumiya, Hitoshi Takai
  • Patent number: 5380808
    Abstract: The invention concerns a process for producing water-insoluble water-absorbing resins, which comprises the steps of initiating polymerization of an aqueous solution containing 30 to 80% by weight of (a) a hydrophilic vinyl monomer having a functional group and (b) a crosslinking agent by supplying the aqueous solution together with (c) a polymerization initiator to a polymerizing apparatus capable of heating and/or cooling surfaces in contact with the aqueous solution, subsequently causing constant temperature polymerization of the solution without agitating the same by controlling the temperature of the system being polymerized to 20.degree. to 70.degree. C., and elevating, if necessary, the temperature ok the system to be in excess of 70.degree. C. in a stage with a polymerization percentage of 70% or above before completion of polymerization. Obtainable water-insoluble water-absorbing resins have excellent water-absorbing property and have less water-soluble components.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: January 10, 1995
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takashi Sumiya, Masashi Date, Kenji Tanaka
  • Patent number: 5061565
    Abstract: A film for heat-sensitive mimeograph stencil and a heat-sensitive mimeograph stencil comprising a porous support and the film laminated thereon are disclosed. Since the film of the present invention has an energy of crystal fusion .DELTA.Hu of 3-11 cal/g and has a difference Tm in temperature of the crystal fusion-starting point and the crystal fusion-terminating point of 50.degree. C. to 100.degree. C., the heat sensitivity is high, so that the characters and symbols or figures can be printed clearly, and the unevenness in the thickness and the light and shade of the printed characters may substantially be eliminated. Further, since it is not necessary to make the film thin, productivity and ease of handling may be promoted.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: October 29, 1991
    Assignee: Toray Industries, Inc.
    Inventors: Seizo Aoki, Kenji Tsunashima, Toshiya Yoshii, Yasuji Nakahara, Takashi Sumiya, Takashi Mimura
  • Patent number: 5051475
    Abstract: The present invention is directed to a polyester film comprising at least at its surface portion oriented sulfonic acid groups and/or salts thereof with an orientation degree of 5-100, which has an excellent adhesiveness, especially excellent anti-alkaline adhesiveness. The present invention also makes it possible to provide a polyester film having, in addition to the excellent adhesiveness, an excellent transparency, antistatic property and waterproof property.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: September 24, 1991
    Assignee: Toray Industries, Inc.
    Inventors: Kenji Tsunashima, Takashi Mimura, Takashi Sumiya, Hiroshi Kuboyama
  • 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: 4908277
    Abstract: The present invention is directed to a polyester film comprising at least at its surface portion oriented sulfonic acid groups and/or salts thereof with an orientation degree of 5-100, which has an excellent adhesiveness, especially excellent anti-alkaline adhesiveness. The present invention also makes it possible to provide a polyester film having, in addition to the excellent adhesiveness, an excellent transparency, antistatic property and waterproof property.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: March 13, 1990
    Assignee: Toray Industries, Inc.
    Inventors: Kenji Tsunashima, Takashi Mimura, Takashi Sumiya, Hiroshi Kuboyama
  • Patent number: 4786558
    Abstract: The present invention relates to a composite film comprising a plastic film and a protective layer which is formed on at least one surface of the film, wherein the protective layer is made of a mixture comprising (a) an inorganic swellable silicate having a layered structure and (b) a compound containing a silanol group at a weight ratio of (a) to (b) of between 1:1000 and 2:1 and an antistatic composite film comprising a plastic film and a coating layer which is formed on at least one surface of the film, wherein said coating layer is made of a mixture comprising (a) a swellable inorganic silicate having a layered structure and containing at least one ion selected from among aliphatic ammonium ions having at most 6 carbon atoms, sodium ion, silver ion and lithium ion as an interlayer ion and (b) at least one member selected from among water-soluble compounds and water-dispersible resins at a weight ratio of (a) to (b) of between 1:1000 and 2:1.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: November 22, 1988
    Assignee: Toray Industries, Ltd.
    Inventors: Takashi Sumiya, Kenji Yabe, Takashi Mimura, Satoyuki Minami