Patents by Inventor Yasumitu Kondo

Yasumitu Kondo 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).

  • Water-cooling method of steel material
    Patent number: 7815757
    Abstract: The oxide film thickness of the steel material surface (dH2O+do2) is made to become 15 nm or less where post-treatment after water-cooling is not needed by suitably setting the conditions of the water-cooling start temperature (Ti), water-cooling end temperature (To), steel material thickness (d), concentration of solute oxygen in the cooling water (Do), and cooling rate (CR) in the equation of dH2O+do2=7.98×10?4(Ti?To)dDo+{5.50×10?3(Ti2?To2)?6.51(Ti?To)}/CR.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: October 19, 2010
    Assignees: Nippon Steel Corporation, Nippon Steel Engineering Co., Ltd.
    Inventors: Hisamoto Wakabayashi, Yasumitu Kondo, Tooru Akashi
  • Water-Cooling Method of Steel Material and Steel Material Obtained by That Water-Cooling Method
    Publication number: 20090038715
    Abstract: The oxide film thickness of the steel material surface (dH2O+do2) is made to become 15 nm or less where post-treatment after water-cooling is not needed by suitably setting the conditions of the water-cooling start temperature (Ti), water-cooling end temperature (To), steel material thickness (d), concentration of solute oxygen in the cooling water (Do), and cooling rate (CR) in the equation of dH2O+do2=7.98×10?4(Ti?To)dDo+{5.50×10?3(Ti2?To2)?6.51 (Ti?To)}/CR.
    Type: Application
    Filed: April 5, 2006
    Publication date: February 12, 2009
    Inventors: Hisamoto Wakabayashi, Yasumitu Kondo, Tooru Akashi