Patents by Inventor Hidenao Takazawa

Hidenao Takazawa 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).

  • Bioactive substance having antitumor activity, producing strain, and production thereof
    Patent number: 5965430
    Abstract: Asn-linked glycoprotein having antitumor activity, with molecular weight of 32-84 kDa, its producing strain, production and use, adsorbs to Con. A. The process for its production comprises culturing a microorganism belonging to genus Aspergillus and isolating from the culture medium Asn-linked glycoprotein having a molecular weight of 32-84 kDa which adsorbs to Con. A, or a mixture thereof. The substance having antitumor activity is effective for treatment of solid tumors, ascites tumors, multiple cytoma and oval tumors and for the suppression of tumors.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: October 12, 1999
    Assignee: Senka Co., Ltd.
    Inventor: Hidenao Takazawa
  • Methods for processing leachate using completely closed system in monitor-type and stabilizing-type industrial and non-industrial waste treatment plant
    Patent number: 5516975
    Abstract: The present invention provides a method for processing wastes containing a large amount of water and a method for processing leachate from industrial wastes. Specifically, the present invention provides a method which comprises maintaining reduced pressure in the dryer equipped with a stirring means, feeding wastes containing a large amount of water to the dryer, stirring the wastes while blowing refrigerated air at -20.degree. C..+-.5.degree. C. to the dryer, and drying the frozen moisture portion of the wastes by sublimation. Air heated at 80.degree. C.+10.degree. C. can be used instead of refrigerated air to dry water of the wastes by evaporation. The present invention also provides a method for processing leachate which comprises pooling leachate industrial wastes and burned ashes, and utilizing the leachate to absorb wet-type toxic gas, thereby confining the leachate within the waste treatment plant.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: May 14, 1996
    Assignee: Senka Co.
    Inventor: Hidenao Takazawa
  • Methods for processing wastes using potential heat of waste gas prior to incineration
    Patent number: 5347938
    Abstract: The present invention provides a method for processing wastes containing a large amount of water and a method for processing leachate from industrial wastes. Specifically, the present invention provides a method which comprises maintaining reduced pressure in the dryer equipped with a stirring means, feeding wastes containing a large amount of water to the dryer, stirring the wastes while blowing refrigerated air at -20.degree. C..+-.5.degree. C. to the dryer, and drying the frozen moisture portion of the wastes by sublimation. Air heated at 80.degree. C.+10.degree. C. can be used instead of refrigerated air to dry water of the wastes by evaporation. The present invention also provides a method for processing leachate which comprises pooling leachate industrial wastes and burned ashes, and utilizing the leachate to absorb wet-type toxic gas, thereby confining the leachate within the waste treatment plant.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: September 20, 1994
    Inventor: Hidenao Takazawa