Patents by Inventor Takumi Yanagawa

Takumi Yanagawa 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: 10372826
    Abstract: Training data including a first and second group of questions each associated with an answer is read into memory by a computer. A class of answers including the answer to a question for each question is determined, where each class of answers has a class label that is associated with each of the questions, and each of the questions are classified into a respective class of answers, accordingly. First and second training data is generated including the first and second groups of questions and corresponding classes of answers for use in first and second classifiers, respectively. Each question of the first and second group of questions is classified by the second and first classifiers, respectively, where the classifying generates corresponding classification results. The first or second training data is updated based on the classification results to generate corresponding updated first or second training data, respectively.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: August 6, 2019
    Assignee: International Business Machines Corporation
    Inventors: Hiroaki Komine, Kaori Maruyama, Takumi Yanagawa
  • Publication number: 20190087411
    Abstract: Training data including a first and second group of questions each associated with an answer is read into memory by a computer. A class of answers including the answer to a question for each question is determined, where each class of answers has a class label that is associated with each of the questions, and each of the questions are classified into a respective class of answers, accordingly. First and second training data is generated including the first and second groups of questions and corresponding classes of answers for use in first and second classifiers, respectively. Each question of the first and second group of questions is classified by the second and first classifiers, respectively, where the classifying generates corresponding classification results. The first or second training data is updated based on the classification results to generate corresponding updated first or second training data, respectively.
    Type: Application
    Filed: December 18, 2017
    Publication date: March 21, 2019
    Inventors: Hiroaki Komine, Kaori Maruyama, Takumi Yanagawa
  • Publication number: 20190087408
    Abstract: Training data including a first and second group of questions each associated with an answer is read into memory by a computer. A class of answers including the answer to a question for each question is determined, where each class of answers has a class label that is associated with each of the questions, and each of the questions are classified into a respective class of answers, accordingly. First and second training data is generated including the first and second groups of questions and corresponding classes of answers for use in first and second classifiers, respectively. Each question of the first and second group of questions is classified by the second and first classifiers, respectively, where the classifying generates corresponding classification results. The first or second training data is updated based on the classification results to generate corresponding updated first or second training data, respectively.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 21, 2019
    Inventors: Hiroaki Komine, Kaori Maruyama, Takumi Yanagawa
  • Publication number: 20170076917
    Abstract: A plasma source assembly for use with a processing chamber includes a blocker plate with at least one elongate slot through the blocker plate. The elongate slots can be have different lengths and angles relative to sides of the blocker plate.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 16, 2017
    Inventors: Joseph Yudovsky, John C. Forster, Kallol Bera, Somesh Khandelwal, Mandyam Sriram, Keiichi Tanaka, Kenji Takeshita, Nobuhiro Sakamoto, Takumi Yanagawa
  • Patent number: 8741165
    Abstract: An apparatus for etching a dielectric layer contained by a substrate is provided. An etch reactor comprises a top electrode and a bottom electrode. An etch gas source supplies an etch gas into the etch reactor. A first Radio Frequency (RF) source generates a first RF power with a first frequency and supplies the first RF power into the etch reactor, whereas the first frequency is between 100 kilo Hertz (kHz) and 600 kHz. A second RF source generates a second RF power with a second frequency and supplies the second RF power into the etch reactor, whereas the second frequency is at least 10 mega Hertz (MHz).
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: June 3, 2014
    Assignee: Lam Research Corporation
    Inventors: Bing Ji, Erik A. Edelberg, Takumi Yanagawa
  • Patent number: 7977390
    Abstract: A method for etching features in a dielectric layer is provided. A mask is formed over the dielectric layer. A protective silicon-containing coating is formed on exposed surfaces of the mask. The features are etched through the mask and protective silicon-containing coating. The features may be partially etched before the protective silicon-containing coating is formed.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: July 12, 2011
    Assignee: Lam Research Corporation
    Inventors: Bing Ji, Erik A. Edelberg, Takumi Yanagawa, Zhisong Huang, Lumin Li
  • Publication number: 20110021030
    Abstract: An apparatus for etching a dielectric layer contained by a substrate is provided. An etch reactor comprises a top electrode and a bottom electrode. An etch gas source supplies an etch gas into the etch reactor. A first Radio Frequency (RF) source generates a first RF power with a first frequency and supplies the first RF power into the etch reactor, whereas the first frequency is between 100 kilo Hertz (kHz) and 600 kHz. A second RF source generates a second RF power with a second frequency and supplies the second RF power into the etch reactor, whereas the second frequency is at least 10 mega Hertz (MHz).
    Type: Application
    Filed: October 7, 2010
    Publication date: January 27, 2011
    Applicant: Lam Research Corporation
    Inventors: Bing Ji, Erik A. Edelberg, Takumi Yanagawa
  • Publication number: 20080119055
    Abstract: An apparatus for etching a dielectric layer contained by a substrate is provided. An etch reactor comprises a top electrode and a bottom electrode. An etch gas source supplies an etch gas into the etch reactor. A first Radio Frequency (RF) source generates a first RF power with a first frequency and supplies the first RF power into the etch reactor, whereas the first frequency is between 100 kilo Hertz (kHz) and 600 kHz. A second RF source generates a second RF power with a second frequency and supplies the second RF power into the etch reactor, whereas the second frequency is at least 10 mega Hertz (MHz).
    Type: Application
    Filed: November 21, 2006
    Publication date: May 22, 2008
    Inventors: Bing Ji, Erik A. Edelberg, Takumi Yanagawa
  • Publication number: 20070026677
    Abstract: A method for etching features in a dielectric layer is provided. A mask is formed over the dielectric layer. A protective silicon-containing coating is formed on exposed surfaces of the mask. The features are etched through the mask and protective silicon-containing coating. The features may be partially etched before the protective silicon-containing coating is formed.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 1, 2007
    Inventors: Bing Ji, Erik Edelberg, Takumi Yanagawa, Zhisong Huang, Lumin Li