Patents by Inventor Masamichi Yokotani

Masamichi Yokotani 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).

  • Float bath bottom refractory brick and process for its production
    Patent number: 7708935
    Abstract: A process for producing a float bath bottom refractory brick which can suppress a reaction with Na2O from glass at the surface of the refractory brick and thereby prevent flaking phenomena, which process comprises adding a potassium compound to a clayey material comprising from 30 to 45 mass % of Al2O3 and from 50 to 65 mass % of SiO2 and having a Na2O content of at most 1 mass %, so that the K2O content in the float bath bottom refractory brick to be produced would be from 2 to 4 mass %; and a refractory brick useful for a float bath bottom for production of plate glass by a float process.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: May 4, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Shuji Kabashima, Kouzou Sakai, Masamichi Yokotani
  • FLOAT BATH BOTTOM REFRACTORY BRICK AND PROCESS FOR ITS PRODUCTION
    Publication number: 20070238603
    Abstract: It is to provide a process for producing a float bath bottom refractory brick which can suppress a reaction with Na2O from glass at the surface of the refractory brick and thereby prevents flaking phenomena, as a refractory brick to be used for a float bath bottom for production of plate glass by float process. A process for producing a float bath bottom refractory brick using a clayey material comprising from 30 to 45 mass % of Al2O3 and from 50 to 65 mass % of SiO2 and having a Na2O content of at most 1 mass %, wherein a potassium compound is added so that the K2O content in the float bath bottom refractory brick to be produced would be from 2 to 4 mass %.
    Type: Application
    Filed: May 8, 2007
    Publication date: October 11, 2007
    Applicant: ASAHI GLASS CO., LTD.
    Inventors: Shuji KABASHIMA, Kouzou SAKAI, Masamichi YOKOTANI
  • Method for reducing nitrogen oxides in combustion gas from combustion furnace
    Patent number: 6939125
    Abstract: A method for reducing NOx, in a combustion gas which is discharged from a combustion furnace for burning a fuel by means of a gas containing oxygen in an amount of at least 80 vol % and which contains oxygen, which method comprises adding a combustible material to the combustion gas at a temperature of from 1,000 to 1,500° C., wherein the combustible material contains a compound comprising C and H.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: September 6, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Masamichi Yokotani, Yutaka Ishikawa, Atsushi Tanigaki, Daisuke Hasegawa, Shinji Morohashi
  • Method for reducing nitrogen oxides in combustion gas from combustion furnace
    Publication number: 20030175631
    Abstract: A method for reducing NOx, in a combustion gas which is discharged from a combustion furnace for burning a fuel by means of a gas containing oxygen in an amount of at least 80 vol % and which contains oxygen, which method comprises adding a combustible material to the combustion gas at a temperature of from 1,000 to 1,500° C., wherein the combustible material contains a compound comprising C and H.
    Type: Application
    Filed: April 14, 2003
    Publication date: September 18, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Masamichi Yokotani, Yutaka Ishikawa, Atsushi Tanigaki, Daisuke Hasegawa, Shinji Morohashi