Patents Assigned to Kabushiki Kaisha Genchi Kenkyusho
  • Method for manufacturing thin body warming devices
    Patent number: 6863682
    Abstract: The present invention relates to the use of an exothermic composition having, as essential components, a water absorptive polymer and/or tackifier, carbon component and/or metal chloride and features that the product is as a whole ink-like or cream-like in a method of manufacturing an exothermic device.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: March 8, 2005
    Assignee: Kabushiki Kaisha Genchi Kenkyusho
    Inventor: Akio Usui
  • Ink like or cream-like exothermic composition, exothermic device made thereof and manufacturing method of exothermic device
    Patent number: 6436128
    Abstract: The present invention relating to an exothermic decomposition has, as essential components, a water absorptive polymer and/or tackifier, carbon component and/or metal chloride and features that the product is as a whole ink-like or cream-like.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: August 20, 2002
    Assignee: Kabushiki Kaisha Genchi Kenkyusho
    Inventor: Akio Usui
  • Foot warming exothermic device
    Patent number: 6264681
    Abstract: A method of manufacturing a foot warming exothermic device comprises placing an exothermic composition of a viscous fluid form by printing or coating on one surface of a thin sheet base material and in at least one predetermined portion of the one surface to such a configuration as to cover a desired site of a human foot, and then placing a thin sheet covering material on the fluid exothermic composition so as to cover the exothermic composition, at least one or part of the base material and the covering material being gas permeable.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: July 24, 2001
    Assignee: Kabushiki Kaisha Genchi Kenkyusho
    Inventor: Akio Usui
  • Viscous liquid deoxidizer, deoxidizing sheet made thereof and manufacturing method for deoxidizing sheet
    Patent number: 6165381
    Abstract: A viscous liquid deoxidizer including a metal powder, a water absorptive polymer and/or a tackifier and water as an essential component, where the metal powder is a reacting component and the deoxidizer is formed in the form of a viscous liquid. It also relates to a deoxidizing sheet using this deoxidizer and a method for producing such deoxidizing sheet.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: December 26, 2000
    Assignee: Kabushiki Kaisha Genchi Kenkyusho
    Inventor: Akio Usui
  • Method of controlling exothermic reaction of an exothermic composition, the exothermic composition, an exothermic device and an application pad
    Patent number: 6099556
    Abstract: An exothermic composition, enclosed in a container at least part of which is gas-permeable, generates heat in the presence of air. The exothermic composition includes a water absorber having a water absorptive ability reversibly variable with temperature variations. The water absorber releases adsorbed water, at above a predetermined temperature, to increase free moisture around a metal powder, thereby retarding the exothermic reaction.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: August 8, 2000
    Assignee: Kabushiki Kaisha Genchi Kenkyusho
    Inventor: Akio Usui
  • Exothermic device and an application pad using the same
    Patent number: 5879378
    Abstract: An exothermic device has an exothermic composition enclosed in a flat pouch formed of film or sheet, at least one surface thereof being gas-permeable. The exothermic composition comprises a laminate of an exothermic reaction layer having an exothermic substance as an essential ingredient thereof, and a single or a plurality of reaction auxiliary layer(s) including other ingredients. The exothermic device is incorporated into a sticking pad applicable to the human body to provide a warming and/or therapeutic effect.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: March 9, 1999
    Assignee: Kabushiki Kaisha Genchi Kenkyusho
    Inventor: Akio Usui