Patents by Inventor Yasuhiko Koiso

Yasuhiko Koiso 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: 20060104009
    Abstract: An electrode sheet which is made by applying a coating solution prepared by dispersing graft polymer which is obtained by graft polymerizing an organic monomer and at least one of activated carbon and carbon black into a solvent over surfaces of a collector followed by drying and heat-treating. An electric double layer capacitor having a constitution of laminating a separator and the electrode sheet. An electrode sheet produced by forming polarizable electrodes strongly at ease over surfaces of collectors such as metal foil whose adhesion strength between the collector and the polarizable electrode hardly decreasing even by gases generated with repetition of charging and discharging electricity, oscillation or so and further, capable of maintaining characteristics such as internal resistance and so on favorably for a long term is provided.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 18, 2006
    Inventors: Yutaka Kanbara, Kenji Morohashi, Kimio Okada, Yasumitsu Higuchi, Yasuhiko Koiso, Koichi Yada
  • Patent number: 6127294
    Abstract: The present invention provides a warmer in the form of a sheet shaped heat generating body which is obtained using a warming composition that generates heat when in contact with air, in which the warming composition can be easily dispersed and held in a uniform arrangement, and in which the warming composition is prevented from leaking; and provides a method for manufacturing such a sheet. The sheet shaped heat generating body pertaining to the present invention is obtained by supporting a warming composition and a heat-fusible adhesive powder on a nonwoven fabric (a), superposing a nonwoven fabric (b) on the upper surface, heating and pressing the assembly with the aid of a molding press, and impregnating the resulting sheet with water or an aqueous solution of an inorganic electrolyte.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: October 3, 2000
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Yasuhiko Koiso, Naoto Wagatsuma, Mamoru Takahashi
  • Patent number: 6127290
    Abstract: Provided is a heat generating bag for footwear having a comfortable temperature regardless of the state of use, namely, when staying still, walking etc., which is thin and avoids an uncomfortable feeling of the wearer. The heat generating bag for footwear is made by having a heat generating composition powder and hot-melt adhesive powder held in the pores of multiporous vegetable fiber non-woven fabrics, such fabrics being heat compressed on a mold compressor, and the obtained sheet shaped heat generating body being packed in an air-permeable bag. The heat composition is held in the pores of multiporous vegetable fiber non-woven fabric layers which are superposed by the adhesion of water. Such non-woven fabric are compressed on a mold compressor, and the obtained sheet shaped heat generating body is impregnated with water or an inorganic electrolyte and then packed in an air-permeable bag.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: October 3, 2000
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Yasuhiko Koiso, Naoto Wagatsuma, Masako Yamakawa, Minako Suzuki
  • Patent number: 5975074
    Abstract: Water is adhered to the bottom face of a non-woven fabric having a large number of pores, then a heat generating powder composition is sprayed onto the top face of this fabric to be held in place. Another non-woven fabric is then superposed on the top face of the first non-woven fabric and the two non-woven fabrics are compressed. Water or a solution of electrolytes in water is then sprayed on the fabrics. Thereby, a sheet shaped heat generating body can be provided which uses a heat generating composition which generates heat when contacting air, which prevents concentration of the heat generating composition in one direction, and which is thin, flexible and has good heat generating properties.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: November 2, 1999
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Yasuhiko Koiso, Naoto Wagatsuma, Masayuki Fujisawa, Namoru Takahashi
  • Patent number: 5588304
    Abstract: A trigger capable of causing crystallization of regenerative substances. A regenerative body includes the trigger which includes a plurality of secured elastic flat elements and the regenerative substances, when in a supercooled state, receive a physical stimulus from the trigger.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: December 31, 1996
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Yasuhiko Koiso, Yoshiki Matsumoto, Masayuki Fujisawa, Isao Nagatsu
  • Patent number: 5429762
    Abstract: A cooling agent which cools by an endothermic reaction resulting from the dissolving of crystals of inorganic salts water, the salts crystallizing at about room temperature by supplying heat. The cooling agent comprises a mixture of (i) a sodium phosphate salt, (ii) a sodium ammonium phosphate salt or an ammonium phosphate salt, and (iii) water. The cooling agent is produced in a manner which avoids the conglomeration of the crystals, which was a difficulty in the art. Moreover, the cooling agent of the present invention can be used repeatedly. When a nucleating agent, a highly water absorbent polymer or a thickener is added to the cooling agent, the precipitation of the crystals occurs in a still finer and stabler state. The cooling agent can be used in a cooling pillow having a desirable cooling property and a soft and agreeable touch, which offers comfort with safety and which is free from conglomeration of crystals, even after a long period of time.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: July 4, 1995
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Koichi Kitahara, Yasuhiko Koiso, Yoshiki Matsumoto, Masayuki Fujisawa, Isao Nagatsu, Mamoru Takahashi
  • Patent number: 5425975
    Abstract: A sheet-shaped heat-generating body comprising a sheet-shaped substrate comprising irregularly arranged fibers and having a multiplicity of gaps among the fibers, an oxidizable metal powder dispersed in and supported by the substrate, and an inorganic electrolyte solution containing activated carbon mixed and suspended therein with which the substrate supporting the oxidizable metal powder dispersed therein is impregnated. Since the entire structure of the sheet-shaped heat-generating body is integrated, with the fibrous and porous sheet-shaped substrate assuring uniform distribution and firm support of the oxidizable metal powder or the heat-generating substance, the body is flexible, is free from one-sided distribution of the heat-generating substance, and has excellent heat generating capability.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: June 20, 1995
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Yasuhiko Koiso, Shigeo Ariki
  • Patent number: 4516564
    Abstract: A heat generating body suitable for use as a body warmer or the like. The heat generating body is composed of a closed bag locally provided with at least one air permeable portion constituted by a group of fine pores of a diameter equivalent of not more than 20 microns, and a heat generating composition accommodated in the bag.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: May 14, 1985
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Yasuhiko Koiso, Kenji Ohtsuka, Shigeo Yahara