Patents by Inventor Minako Okamura

Minako Okamura 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).

  • Porous potassium carbonate having special pore structure and method for its production
    Patent number: 7514060
    Abstract: A method for producing a porous potassium carbonate, which comprises calcining potassium hydrogen carbonate crystals having a mean particle diameter of from 100 to 1,000 ?m at a temperature of the object to be calcined of from 100 to 500° C., while introducing a dry gas which has a dew point of not higher than 0° C. and a temperature of from 10 to 50° C.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: April 7, 2009
    Assignee: Asahi Glass Company, Limited
    Inventors: Hachiro Hirano, Yasunori Yamaguchi, Minako Okamura
  • Porous potassium carbonate having special pore structure and method for its production
    Publication number: 20040265206
    Abstract: A method for producing a porous potassium carbonate, which comprises calcining potassium hydrogen carbonate crystals having a mean particle diameter of from 100 to 1,000 &mgr;m at a temperature of the object to be calcined of from 100 to 500° C., while introducing a dry gas which has a dew point of not higher than 0° C. and a temperature of from 10 to 50° C.
    Type: Application
    Filed: June 23, 2004
    Publication date: December 30, 2004
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hachiro Hirano, Yasunori Yamaguchi, Minako Okamura
  • Method for producing foamed synthetic resin
    Patent number: 6043291
    Abstract: A method for producing a foamed synthetic resin which comprises reacting a polyisocyanate compound with an active hydrogen compound having at least 2 active hydrogen-containing functional groups reactive with an isocyanate group in the presence of a foaming agent, wherein the foaming agent comprises at least two kinds of 1,1,1,3,3-pentafluoropropane and 1,1,1,2-tetrafluoroethane.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: March 28, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Hiromitsu Takeyasu, Minako Okamura, Nobuaki Tsukida, Hisashi Sato