Patents by Inventor Keiko Kanzawa

Keiko Kanzawa 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).

  • Patent number: 6097469
    Abstract: A method of forming a resist on a substrate and processing the resist in a resist processing system having a processing region and a non-processing region which are air-conditioned, the method comprising the steps of, transferring the substrate into the non-processing region, coating the resist on the substrate, exposing the coated resist, developing the exposed resist, subjecting the coated resist at least once, to heat treatment in a period from the transferring step to the developing step, detecting at least once, the concentration of an alkaline component which causes defective resolution of the resist in a processing atmosphere in a period from the transferring step to the developing step, setting a threshold value for the concentration of the alkaline component in the processing atmosphere which causes the defective resolution of the resist, and controlling and changing at least one processing atmosphere in the steps in accordance with a detected concentration of the alkaline component and the threshold
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: August 1, 2000
    Assignee: Tokyo Electron Limited
    Inventors: Hidetami Yaegashi, Yasunori Kawakami, Jae Hoon Park, Keiko Kanzawa, Takayuki Katano, Takayuki Toshima, Yuji Kakazu
  • Patent number: 6017663
    Abstract: A method of forming a resist on a substrate and processing the resist in a resist processing system having a processing region and a non-processing region which are air-conditioned, the method comprising the steps of, transferring the substrate into the non-processing region, coating the resist on the substrate, exposing the coated resist, developing the exposed resist, subjecting the coated resist at least once, to heat treatment in a period from the transferring step to the developing step, detecting at least once, the concentration of an alkaline component which causes defective resolution of the resist in a processing atmosphere in a period from the transferring step to the developing step, setting a threshold value for the concentration of the alkaline component in the processing atmosphere which causes the defective resolution of the resist, and controlling and changing at least one processing atmosphere in the steps in accordance with a detected concentration of the alkaline component and the threshold
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: January 25, 2000
    Assignee: Tokyo Electron Limited
    Inventors: Hidetami Yaegashi, Yasunori Kawakami, Jae Hoon Park, Keiko Kanzawa, Takayuki Katano, Takayuki Toshima, Yuji Kakazu
  • Patent number: 5944894
    Abstract: A substrate treatment system comprises process sections provided with at least either of liquid treatment group units and heat treatment group units, an upper space formed above the process sections in order to supply air to the process sections, a purification section for removing alkaline components from the air to be supplied to the upper spaces to purify the air, temperature/humidity controller communicating with the urification section and the upper spaces to control the temperature and humidity of the air passing through the purification sections, and fans for supplying air to the top spaces from the temperature/humidity controller, lowering the air from the upper spaces into the process sections, and supplying at least some of the air lowering through the process sections to the temperature/humidity controller.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: August 31, 1999
    Assignee: Tokyo Electron Limited
    Inventors: Junichi Kitano, Takayuki Katano, Keiko Kanzawa, Masami Akimoto, Norio Semba
  • Patent number: 5932380
    Abstract: A method of forming a resist on a substrate and processing the resist in a resist processing system having a processing region and a non-processing region which are air-conditioned, the method comprising the steps of, transferring the substrate into the non-processing region, coating the resist on the substrate, exposing the coated resist, developing the exposed resist, subjecting the coated resist at least once, to heat treatment in a period from the transferring step to the developing step, detecting at least once, the concentration of an alkaline component which causes defective resolution of the resist in a processing atmosphere in a period from the transferring step to the developing step, setting a threshold value for the concentration of the alkaline component in the processing atmosphere which causes the defective resolution of the resist, and controlling and changing at least one processing atmosphere in the steps in accordance with a detected concentration of the alkaline component and the threshold
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: August 3, 1999
    Assignee: Tokyo Electron Limited
    Inventors: Hidetami Yaegashi, Yasunori Kawakami, Jae Hoon Park, Keiko Kanzawa, Takayuki Katano, Takayuki Toshima, Yuji Kakazu