Patents by Inventor Toshikazu Kumai

Toshikazu Kumai 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: 20080214017
    Abstract: A gate insulation film (104) of a MISFET (100) is constituted of a silicon oxide film (106), silicon nitride film (107), and high-permittivity film (108). The silicon oxide film (106) and silicon nitride film (107) are formed by microwave plasma processing with a radial line slot antenna.
    Type: Application
    Filed: December 31, 2007
    Publication date: September 4, 2008
    Applicant: Tokyo Electron Limited
    Inventors: Shigemi Murakawa, Toshikazu Kumai, Toshio Nakanishi
  • Patent number: 7374635
    Abstract: A gate insulation film (104) of a MISFET (100) is constituted of a silicon oxide film (106), silicon nitride film (107), and high-permittivity film (108). The silicon oxide film (106) and silicon nitride film (107) are formed by microwave plasma processing with a radial line slot antenna.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 20, 2008
    Assignee: Tokyo Electron Limited
    Inventors: Shigemi Murakawa, Toshikazu Kumai, Toshio Nakanishi
  • Publication number: 20070085154
    Abstract: A gate insulation film (104) of a MISFET (100) is constituted of a silicon oxide film (106), silicon nitride film (107), and high-permittivity film (108). The silicon oxide film (106) and silicon nitride film (107) are formed by microwave plasma processing with a radial line slot antenna.
    Type: Application
    Filed: December 11, 2006
    Publication date: April 19, 2007
    Applicant: Tokyo Electron Limited
    Inventors: Shigemi Murakawa, Toshikazu Kumai, Toshio Nakanishi
  • Patent number: 7166185
    Abstract: The silicon oxide film (106) and silicon nitride film (107) are formed by microwave plasma processing with a radial line slot antenna.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: January 23, 2007
    Assignee: Tokyo Electron Limited
    Inventors: Shigemi Murakawa, Toshikazu Kumai, Toshio Nakanishi
  • Patent number: 6969649
    Abstract: A DRAM has, in one embodiment, a plurality of word lines each having its upper and side surfaces covered with a first insulating film, a plurality of bit lines each being provided so as to be insulated from and transverse to the word lines and being covered with a second insulating film, and a plurality of memory cells each provided at an intersection between one word line and one bit line and including a capacitor and a memory cell selection transistor, in which contact holes for connection between semiconductor regions and capacitors and between semiconductor regions and bit lines are formed in self-alignment and the second insulating film is made of a material having a permittivity smaller than that of the first insulating film.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: November 29, 2005
    Assignees: Hitachi, Ltd., Texas Instruments Incorporated
    Inventors: Toshihiro Sekiguchi, Yoshitaka Tadaki, Keizo Kawakita, Hideo Aoki, Toshikazu Kumai, Kazuhiko Saito, Michio Nishimura, Michio Tanaka, Katsuo Yuhara, Shinya Nishio, Toshiyuki Kaeriyama, Songsu Cho
  • Patent number: 6852194
    Abstract: Processing apparatus is disclosed, that comprises substrate container holding table that can hold substrate container that contains plurality of target substrates, first transferring chamber, disposed adjacent to the substrate container holding table, that maintains the interior at first pressure, first processing unit group, disposed around the first transferring chamber, that processes target substrate at the first pressure, first transferring mechanism, disposed in the first transferring chamber, that transfers target substrate, second transferring chamber, disposed adjacent to the first transferring chamber, that maintains the interior at second pressure, second processing unit group, disposed around the second transferring chamber, that processes target substrate at the second pressure, and second transferring mechanism, disposed in the second transferring chamber, wherein the first transferring mechanism and/or the second transferring mechanism has at least two transferring arms.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: February 8, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Minoru Matsushita, Yasushi Kodashima, Toshikazu Kumai
  • Publication number: 20040261710
    Abstract: Processing apparatus is disclosed, that comprises substrate container holding table that can hold substrate container that contains plurality of target substrates, first transferring chamber, disposed adjacent to the substrate container holding table, that maintains the interior at first pressure, first processing unit group, disposed around the first transferring chamber, that processes target substrate at the first pressure, first transferring mechanism, disposed in the first transferring chamber, that transfers target substrate, second transferring chamber, disposed adjacent to the first transferring chamber, that maintains the interior at second pressure, second processing unit group, disposed around the second transferring chamber, that processes target substrate at the second pressure, and second transferring mechanism, disposed in the second transferring chamber, wherein the first transferring mechanism and/or the second transferring mechanism has at least two transferring arms.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 30, 2004
    Applicant: Tokyo Electron Limited
    Inventors: Minoru Matsushita, Yasushi Kodashima, Toshikazu Kumai
  • Publication number: 20040245584
    Abstract: A gate insulation film (104) of a MISFET (100) is constituted of a silicon oxide film (106), silicon nitride film (107), and high-permittivity film (108). The silicon oxide film (106) and silicon nitride film (107) are formed by microwave plasma processing with a radial line slot antenna.
    Type: Application
    Filed: February 27, 2004
    Publication date: December 9, 2004
    Inventors: Shigemi Murakawa, Toshikazu Kumai, Toshio Nakanishi
  • Publication number: 20040179389
    Abstract: A DRAM has, in one embodiment, a plurality of word lines each having its upper and side surfaces covered with a first insulating film, a plurality of bit lines each being provided so as to be insulated from and transverse to the word lines and being covered with a second insulating film, and a plurality of memory cells each provided at an intersection between one word line and one bit line and including a capacitor and a memory cell selection transistor, in which contact holes for connection between semiconductor regions and capacitors and between semiconductor regions and bit lines are formed in self-alignment and the second insulating film is made of a material having a permittivity smaller than that of the first insulating film.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 16, 2004
    Inventors: Toshihiro Sekiguchi, Yoshitaka Tadaki, Keizo Kawakita, Hideo Aoki, Toshikazu Kumai, Kazuhiko Saito, Michio Nishimura, Michio Tanaka, Katsuo Yuhara, Shinya Nishio, Toshiyuki Kaeriyama, Songsu Cho
  • Patent number: 6753219
    Abstract: A DRAM has, in one embodiment, a plurality of word lines each having its upper and side surfaces covered with a first insulating film, a plurality of bit lines each being provided so as to be insulated from and transverse to the word lines and being covered with a second insulating film, and a plurality of memory cells each provided at an intersection between one word line and one bit line and including a capacitor and a memory cell selection transistor, in which contact holes for connection between semiconductor regions and capacitors and between semiconductor regions and bit lines are formed in self-alignment and the second insulating film is made of a material having a permittivity smaller than that of the first insulating film.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: June 22, 2004
    Assignees: Hitachi, Ltd., Texas Instruments, Inc.
    Inventors: Toshihiro Sekiguchi, Yoshitaka Tadaki, Keizo Kawakita, Hideo Aoki, Toshikazu Kumai, Kazuhiko Saito, Michio Nishimura, Michio Tanaka, Katsuo Yuhara, Shinya Nishio, Toshiyuki Kaeriyama, Songsu Cho
  • Publication number: 20020192905
    Abstract: A DRAM has, in one embodiment, a plurality of word lines each having its upper and side surfaces covered with a first insulating film, a plurality of bit lines each being provided so as to be insulated from and transverse to the word lines and being covered with a second insulating film, and a plurality of memory cells each provided at an intersection between one word line and one bit line and including a capacitor and a memory cell selection transistor, in which contact holes for connection between semiconductor regions and capacitors and between semiconductor regions and bit lines are formed in self-alignment and the second insulating film is made of a material having a permittivity smaller than that of the first insulating film.
    Type: Application
    Filed: August 23, 2002
    Publication date: December 19, 2002
    Inventors: Toshihiro Sekiguchi, Yoshitaka Tadaki, Keizo Kawakita, Hideo Aoki, Toshikazu Kumai, Kazuhiko Saito, Michio Nishimura, Michio Tanaka, Katsuo Yuhara, Shinya Nishio, Toshiyuki Kaeriyama, Songsu Cho
  • Publication number: 20020170671
    Abstract: Processing apparatus is disclosed, that comprises substrate container holding table that can hold substrate container that contains plurality of target substrates, first transferring chamber, disposed adjacent to the substrate container holding table, that maintains the interior at first pressure, first processing unit group, disposed around the first transferring chamber, that processes target substrate at the first pressure, first transferring mechanism, disposed in the first transferring chamber, that transfers target substrate, second transferring chamber, disposed adjacent to the first transferring chamber, that maintains the interior at second pressure, second processing unit group, disposed around the second transferring chamber, that processes target substrate at the second pressure, and second transferring mechanism, disposed in the second transferring chamber, wherein the first transferring mechanism and/or the second transferring mechanism has at least two transferring arms.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 21, 2002
    Inventors: Minoru Matsushita, Yasushi Kodashima, Toshikazu Kumai
  • Patent number: 5933726
    Abstract: A semiconductor device, such as a dynamic RAM, and method of making it. A number of stacked cell capacitors are placed at a prescribed spacing in an alignment direction on top of a p.sup.- -type silicon substrate (1). Each capacitor has a nearly perpendicular cylindrical lower electrode (cylindrical polysilicon layer (96)), a dielectric film (silicon nitride film (77)), and upper electrode (plate electrode (78) made of polysilicon). The spacing in the alignment direction is smaller than the inner diameter of the lower electrode.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: August 3, 1999
    Assignee: Texas Instruments Incorporated
    Inventors: Michio Nishimura, Kazuhiko Saitoh, Masayuki Yasuda, Takashi Hayakawa, Michio Tanaka, Yuji Ezaki, Katsuo Yuhara, Minoru Ohtsuka, Toshikazu Kumai, Songsu Cho, Toshiyuki Kaeriyama, Keizo Kawakita, Toshihiro Sekiguchi, Yoshitaka Tadaki, Jun Murata, Hideo Aoki, Akihiko Konno, Kiyomi Katsuyama, Takafumi Tokunaga, Yoshimi Torii
  • Patent number: 5933724
    Abstract: A phase shifting mask is used for manufacturing a semiconductor integrated circuit device including a conductor pattern in which the line width of patterned conductor strips or the space between patterned conductor strips is not constant. For main transparent areas in the mask corresponding to the conductor pattern, auxiliary pattern segments are provided for compensating changes in the phase distribution of transmitted light caused by changes of the line width or the space. Alternately, the spaces between the conductor strips are adjusted to suppress the changes in the phase distribution of transmitted light. Whether the auxiliary pattern segments should have the phase shifting function is determined depending upon the disposition of the main transparent areas.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: August 3, 1999
    Assignees: Hitachi, Ltd., Texas Instruments
    Inventors: Toshihiro Sekiguchi, Yoshitaka Tadaki, Keizo Kawakita, Jun Murata, Katsuo Yuhara, Toshikazu Kumai, Michio Tanaka, Michio Nishimura, Kazuhiko Saitoh, Takatoshi Kakizaki, Takeshi Sakai, Toshiyuki Kaeriyama, Songsu Cho