Patents by Inventor Takehiko Fujita

Takehiko Fujita 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).

  • Publication number: 20050181586
    Abstract: A vertical CVD apparatus is arranged to process a plurality of target substrates all together to form a silicon germanium film. The apparatus includes a reaction container having a process field configured to accommodate the target substrates, and a common supply system configured to supply a mixture gas into the process field. The mixture gas includes a first process gas of a silane family and a second process gas of a germane family. The common supply system includes a plurality of supply ports disposed at different heights.
    Type: Application
    Filed: October 18, 2004
    Publication date: August 18, 2005
    Inventors: Masaki Kurokawa, Katsuhiko Komori, Norifumi Kimura, Kazuhide Hasebe, Takehiko Fujita, Akitake Tamura, Yoshikazu Furusawa
  • Publication number: 20050170617
    Abstract: In a film-formation method for a semiconductor process, a silicon germanium film is formed on a target substrate by CVD in a process field within a reaction container. Then, a silicon coating film is formed to cover the silicon germanium film by CVD in the process field, while increasing temperature of the process field from the first temperature to a second temperature. Then, a silicon film is formed on the coating film by CVD in the process field.
    Type: Application
    Filed: October 18, 2004
    Publication date: August 4, 2005
    Inventors: Masaki Kurokawa, Norifumi Kimura, Takehiko Fujita, Yoshikazu Furusawa, Katsuhiko Komori, Kazuhide Hasebe
  • Publication number: 20050095826
    Abstract: A method for subjecting target substrates to a heat process under a vacuum pressure includes a transfer step, heating-up and pressure-reducing step, and heat-processing step. The transfer step is arranged to transfer into a reaction chamber a holder that supports the substrates at intervals. The heating-up and pressure-reducing step following the transfer step is arranged to heat up the reaction chamber to a process temperature, and exhaust the reaction chamber to a process pressure. During the heating-up and pressure-reducing step, the reaction chamber is set at the process pressure after being set at the process temperature, to form a state where the reaction chamber has the process temperature under a pressure higher than the process pressure. The heat-processing step following the heating-up and pressure-reducing step is arranged to subject the substrates to the heat process at the process temperature and process pressure.
    Type: Application
    Filed: August 25, 2004
    Publication date: May 5, 2005
    Inventors: Takehiko Fujita, Akitake Tamura, Keisuke Suzuki, Kazuhide Hasebe, Mitsuhiro Okada
  • Publication number: 20040159284
    Abstract: A semiconductor process system (10) includes a measuring section (40), an information processing section (51), and a control section (52). The measuring section (40) measures a characteristic of a test target film formed on a target substrate (W) by a semiconductor process. The information processing section (51) calculates a positional correction amount of the target substrate (W) necessary for improving planar uniformity of the characteristic, based on values of the characteristic measured by the measuring section (40) at a plurality of positions on the test target film. The control section (52) controls a drive section (30A, 32A) of a transfer device (30), based on the positional correction amount, when the transfer device (30) transfers a next target substrate (W) to the support member (17) to perform the semiconductor process.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 19, 2004
    Inventors: Koichi Sakamoto, Yamato Tonegawa, Takehiko Fujita