Patents by Inventor Katsumi Sekiguchi

Katsumi Sekiguchi 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: 11456160
    Abstract: In a plasma processing apparatus, a high frequency power source is electrically connected to a lower electrode of a supporting table through a power feeding unit. The power feeding unit is surrounded by a conductor pipe outside the chamber. An electrostatic chuck of the supporting table has therein a plurality of heaters. A filter device is provided between the heaters and a heater controller. The filter device includes a plurality of coil groups, each of the coil groups including two or more coils. In each of the coil groups, the two or more coils are arranged such that winding portions of the two or more coils extend in a spiral shape around a central axis and turns of the winding portions are arranged sequentially and repeatedly, and the coil groups are provided coaxially to the central axis to surround the conductor pipe directly below the chamber.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: September 27, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Naohiko Okunishi, Katsumi Sekiguchi, Ryuichi Yui
  • Publication number: 20190295819
    Abstract: In a plasma processing apparatus, a high frequency power source is electrically connected to a lower electrode of a supporting table through a power feeding unit. The power feeding unit is surrounded by a conductor pipe outside the chamber. An electrostatic chuck of the supporting table has therein a plurality of heaters. A filter device is provided between the heaters and a heater controller. The filter device includes a plurality of coil groups, each of the coil groups including two or more coils. In each of the coil groups, the two or more coils are arranged such that winding portions of the two or more coils extend in a spiral shape around a central axis and turns of the winding portions are arranged sequentially and repeatedly, and the coil groups are provided coaxially to the central axis to surround the conductor pipe directly below the chamber.
    Type: Application
    Filed: March 22, 2019
    Publication date: September 26, 2019
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Naohiko OKUNISHI, Katsumi SEKIGUCHI, Ryuichi YUI
  • Patent number: 8949319
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: February 3, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Patent number: 8607114
    Abstract: In a case where the F-RTO algorithm is simply combined with the exponential backoff algorithm which is being suppressed, there is a problem in that once a spurious timeout occurs, the spurious timeout continuously occurs since then. In order to solve the above problem, according to the present invention, in a communication device for transmitting data segments and receiving acknowledgements in response to the data segments, respectively and sequentially, suppressing an application of a backoff algorithm for increasing a retransmission timeout period at the time of retransmitting a data segment, and controlling the retransmission timeout period to retransmit the data segment, the spurious timeout is determined based upon the acknowledgement received immediately after the retransmission of the data segment. In an event of determining the occurrence of the spurious timeout, the retransmission timeout is increased.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 10, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Satoru Imai, Katsumi Sekiguchi, Noriyoshi Meuchi
  • Patent number: 8423614
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: April 16, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Patent number: 8325786
    Abstract: There is a need for reducing the scale of a circuit that determines and decodes code types for reception signals coded with different codes. A reception logic circuit determines and decodes code types for reception signals coded with different codes. The reception logic circuit determines one of code types for a demodulation signal corresponding to the reception signal based on a difference between codes detected during a modulation period or a non-modulation period occurring in the demodulation signal. The reception logic circuit decodes the code type in accordance with the determined code type based on the modulation period or the non-modulation period that alternately occurs in the demodulation signal. In this manner, the received data is reproduced. There is no need for a decoder specific to each code.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: December 4, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Katsumi Sekiguchi, Mikihisa Orimo
  • Patent number: 8326940
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: December 4, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Publication number: 20120284368
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Application
    Filed: July 20, 2012
    Publication date: November 8, 2012
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Publication number: 20120284179
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Application
    Filed: July 20, 2012
    Publication date: November 8, 2012
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Patent number: 8260878
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: September 4, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Publication number: 20110239073
    Abstract: In a case where the F-RTO algorithm is simply combined with the exponential backoff algorithm which is being suppressed, there is a problem in that one a spurious timeout occurs, the spurious timeout continuously occurs since then. In order to solve the above problem, according to the present invention, in a communication device for transmitting data segments and receiving acknowledgements in response to the data segments, respectively and sequentially, suppressing an application of a backoff algorithm for increasing a retransmission timeout period at the time of retransmitting a data segment, and controlling the retransmission timeout period to retransmit the data segment, the spurious timeout is determined based upon the acknowledgement received immediately after the retransmission of the data segment. In an event of determining the occurrence of the spurious timeout, the retransmission timeout is increased.
    Type: Application
    Filed: December 2, 2009
    Publication date: September 29, 2011
    Applicant: NTT DOCOMO, INC.
    Inventors: Satoru Imai, Katsumi Sekiguchi, Noriyoshi Meuchi
  • Publication number: 20110119349
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Application
    Filed: January 20, 2011
    Publication date: May 19, 2011
    Inventors: Masaaki Yamamoto, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Publication number: 20100124258
    Abstract: There is a need for reducing the scale of a circuit that determines and decodes code types for reception signals coded with different codes. A reception logic circuit determines and decodes code types for reception signals coded with different codes. The reception logic circuit determines one of code types for a demodulation signal corresponding to the reception signal based on a difference between codes detected during a modulation period or a non-modulation period occurring in the demodulation signal. The reception logic circuit decodes the code type in accordance with the determined code type based on the modulation period or the non-modulation period that alternately occurs in the demodulation signal. In this manner, the received data is reproduced. There is no need for a decoder specific to each code.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 20, 2010
    Inventors: Katsumi Sekiguchi, Mikihisa Orimo
  • Patent number: 7680141
    Abstract: A transmitter device which performs window control in transmitting data for transmission through a communication network is caused to identify a mode of window control to be performed based on a communication condition under which the data transmission is performed, so as to transmit the data for transmission by performing the window control in the identified mode.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: March 16, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Motoharu Miyake, Hiroshi Inamura, Katsumi Sekiguchi, Makoto Jinguuji
  • Publication number: 20060168235
    Abstract: An object of the present invention is to reduce a load on the resource of a relay device (2) and to reduce the data-amount charging on a client, when communications are performed between a client (1) and a server (3).
    Type: Application
    Filed: July 17, 2003
    Publication date: July 27, 2006
    Applicant: NTT DoCoMo, Inc.
    Inventors: Katsumi Sekiguchi, Koji Tsurumaki, Masaya Kitaguchi
  • Publication number: 20050165923
    Abstract: A transmitter device which performs window control in transmitting data for transmission through a communication network is caused to identify a mode of window control to be performed based on a communication condition under which the data transmission is performed, so as to transmit the data for transmission by performing the window control in the identified mode.
    Type: Application
    Filed: December 23, 2004
    Publication date: July 28, 2005
    Inventors: Motoharu Miyake, Hiroshi Inamura, Katsumi Sekiguchi, Makoto Jinguuji
  • Publication number: 20050102422
    Abstract: The user of a mobile station which is prepared to receive information providing services from unspecified IP (Information Providers) accesses a gateway server and performs a pre-registration procedure (S71). When an IP server has information to provide to users, it constructs the information in the form of electronic mail, appends user attribute data, and sends this to the gateway server (S72). Upon receiving electronic mail with attribute data, the gateway server stores the electronic mail in a third mailbox, makes a comparison of the user attributes, and calls the mobile stations of relevant users (S73). A user who has received a call requests a download of the electronic mail from the gateway server (S74). The gateway server sends electronic mail to the mobile station which made the request (S75, S76).
    Type: Application
    Filed: December 6, 2004
    Publication date: May 12, 2005
    Inventors: Masaaki Yamamote, Katsumi Sekiguchi, Masaharu Nakatsuchi, Norihito Sekizaki
  • Patent number: 6759633
    Abstract: A heat treatment system for controlling the temperature in a processing vessel. The system includes a cylindrical processing vessel; a supporting table, raised by a support from the bottom portion of the processing vessel, for mounting thereon an object to be processed; and a processing object heating part provided in the supporting table, for heating the object to be processed. In addition a thermoelectric conversion element capable of selectively heating or cooling is provided in the bottom portion of the processing vessel, a resistive heater is provided in the side wall of the processing vessel, and a temperature control part for controlling the operations of the thermoelectric conversion element and the resistive heater is provided. Thus, it is not only possible to appropriately control the temperature in the processing vessel, but it is also possible to reduce space and energy, by combining the resistive heater with a thermoelectric conversion element.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: July 6, 2004
    Assignee: Tokyo Electron Limited
    Inventors: Masato Kubodera, Masaki Sohma, Katsumi Sekiguchi, Shigeru Kasai
  • Publication number: 20030075535
    Abstract: There is provided a heat treatment system which is not only capable of appropriately controlling the temperature in a processing vessel, but also capable of reducing space and energy, by combining a resistive heater with a thermoelectric conversion element. The heat treatment system comprises: a cylindrical processing vessel 4; a supporting table 14, raised by a support from the bottom portion of the processing vessel, for mounting thereon an object W to be processed; and a processing object heating part 16, provided in the supporting table, for heating the object to be processed, wherein a thermoelectric conversion element 38 capable of selectively heating or cooling is provided in the bottom portion of the processing vessel, a resistive heater 50 is provided in the side wall of the processing vessel, and a temperature control part 40 for controlling the operations of the thermoelectric conversion element and the resistive heater is provided.
    Type: Application
    Filed: October 28, 2002
    Publication date: April 24, 2003
    Inventors: Masato Kubodera, Masaki Sohma, Katsumi Sekiguchi, Shigeru Kasai
  • Publication number: 20020046252
    Abstract: If the requested contents are present in a cache server those contents are sent to the client sending the request but if those contents are not present in the cache server the contents request message with the cache server set as the source is sent to a server, but an address conversion circuit operates to convert the source address of the message into the address of the client that actually issued the request.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 18, 2002
    Inventors: Masahiro Ono, Kazuhiro Okanoue, Hiroshi Mizuki, Osamu Takahashi, Koji Tsurumaki, Hiroshi Inamura, Katsumi Sekiguchi, Taro Ishikawa