Patents by Inventor Ryuichi Sakai

Ryuichi Sakai 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: 20230242598
    Abstract: A polypeptide that comprises the amino acid sequence of SEQ ID NO: 1 and has a function of delivering a substance into cells, a polypeptide that comprises the amino acid sequence of SEQ ID NO: 2 and has a function of degrading a nucleic acid molecule, a polypeptide that comprises the amino acid sequence of SEQ ID NO: 3 and has a function of degrading a nucleic acid molecule and a function of intranuclearly migrating the same, polynucleotides encoding the respective polypeptides, and transformed cells containing the respective polynucleotides.
    Type: Application
    Filed: April 7, 2021
    Publication date: August 3, 2023
    Applicant: National University Corporation Hokkaido University
    Inventors: Ryuichi SAKAI, Koji NAKANO
  • Patent number: 10347816
    Abstract: The present invention relates to a piezoelectric driving device 10 capable of moving the movable member 14 along the axis direction engaged in a movable manner to the axial direction with respect to the shaft 16. A pair of the external electrodes 26 and 27 respectively comprises the first external connection part 26a and the second external connection part 27a formed at the lower end face in Z axis direction by being insulated against each other. At the opposing face of the weight member 30 facing against the lower end face of the element 20, the first circuit pattern 36 and the second circuit pattern 37 are formed by being insulated against each other; and the first circuit pattern 36 and the second circuit pattern 37 are respectively connected to the first external connection part 26 and the second external connection part 27 by a metal bonding.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 9, 2019
    Assignee: TDK CORPORATION
    Inventors: Toshiki Maruyama, Takuto Horii, Ryuichi Sakai, Shunsuke Ueno, Atsushi Ezawa, Tatsuya Taki
  • Publication number: 20170229636
    Abstract: The present invention relates to a piezoelectric driving device 10 capable of moving the movable member 14 along the axis direction engaged in a movable manner to the axial direction with respect to the shaft 16. A pair of the external electrodes 26 and 27 respectively comprises the first external connection part 26a and the second external connection part 27a formed at the lower end face in Z axis direction by being insulated against each other. At the opposing face of the weight member 30 facing against the lower end face of the element 20, the first circuit pattern 36 and the second circuit pattern 37 are formed by being insulated against each other; and the first circuit pattern 36 and the second circuit pattern 37 are respectively connected to the first external connection part 26 and the second external connection part 27 by a metal bonding.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 10, 2017
    Applicant: TDK CORPORATION
    Inventors: Toshiki MARUYAMA, Takuto HORII, Ryuichi SAKAI, Shunsuke UENO, Atsushi EZAWA, Tatsuya TAKI
  • Patent number: 8895579
    Abstract: Disclosed are heterotricyclic compounds, pharmaceutical compositions, methods of treatment, and methods for selectively antagonizing a glutamate receptor. The pharmaceutical compositions may include and the methods may utilize heterotricyclic compounds that are glutamate analogues which have specificity for AMPA receptors. The pharmaceutical compositions may be utilized to treat or prevent neurological diseases or disorders.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: November 25, 2014
    Assignee: Northwestern University
    Inventors: Geoffrey T. Swanson, Martin B. Gill, Ryuichi Sakai, Masato Oikawa
  • Patent number: 8253544
    Abstract: An apparatus and a method of remote control which can enable real time operation of a device in home from a terminal device at remote location through a network are provided. A first server communicates with a terminal device through the Internet and generates device control data for controlling the device. A second server communicates with the device in a predetermined manner to acquire and store a specific address of the device, generates transmission data for transmission of the received device control data from the first server to the device based on the specific address, and transmits the transmission data to the device. This allows real time control of the device from the terminal device through the network to be realized.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: August 28, 2012
    Assignee: Panasonic Corporation
    Inventors: Koji Hirose, Ryuichi Sakai
  • Publication number: 20120071423
    Abstract: Disclosed are heterotricyclic compounds, pharmaceutical compositions, methods of treatment, and methods for selectively antagonizing a glutamate receptor. The pharmaceutical compositions may include and the methods may utilize heterotricyclic compounds that are glutamate analogues which have specificity for AMPA receptors. The pharmaceutical compositions may be utilized to treat or prevent neurological diseases or disorders.
    Type: Application
    Filed: March 21, 2011
    Publication date: March 22, 2012
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Geoffrey T. Swanson, Martin B. Gill, Ryuichi Sakai, Masato Oikawa
  • Patent number: 7973075
    Abstract: Disclosed are compounds, pharmaceutical compositions, methods of treatment, and methods for selectively antagonizing a GluR5 receptor, a GluR6 receptor, or both receptors. The pharmaceutical compositions include and the methods utilize compounds that are analogs and stereoisomers of dysiherbaine and neodysiherbaine which have specificity for kainate receptors.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: July 5, 2011
    Assignee: Northwestern University
    Inventors: Geoffrey T. Swanson, Leanne Lash, Ryuichi Sakai
  • Patent number: 7839299
    Abstract: A remote control system detects an operating status of various devices through the Internet in real time. A remote controller, which enables a terminal device to control an operation of a device through a network, acquires and stores a latest address of the device by communicating with the device at predetermined time intervals through the network. A status notification request referring to the stored address is transmitted through the network. In response, the remote controller receives status information from the device, stores the status information received from the device, and transmits the stored status information to the terminal device through the network.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: November 23, 2010
    Assignee: Panasonic Corporation
    Inventors: Koji Hirose, Ryuichi Sakai
  • Patent number: 7617009
    Abstract: A remote control system in which an instruction from a remote terminal is transmitted to a controlled device through a remote control device. Device unique data which is information specific to the controlled device is stored in the remote control device or the controlled device. The remote control device generates WEB display data to be displayed on the remote terminal based on a device type of the controlled device and the device unique data. Alternatively, the remote control device generates WEB display data based on the device unique data stored in the controlled device. Thus, even when a new type of controlled device is developed, or even when the function for the controlled device is extended, it does not need to modify programs for achieving functions of the remote control device. Accordingly, it facilitates a change of an operational screen of the terminal in response to those changes.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 10, 2009
    Assignee: Panasonic Corporation
    Inventors: Koji Hirose, Ryuichi Sakai, Takashi Maniwa
  • Publication number: 20090247533
    Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 815, Et 808, and Et 594. The physical properties of these compounds, their preparation and therapeutic properties are also reported.
    Type: Application
    Filed: June 11, 2009
    Publication date: October 1, 2009
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Kenneth L. Rinehart, Ryuichi Sakai
  • Publication number: 20080298582
    Abstract: A client's secret key is Ki=(s+Ii)?1P where Ii is obtained by using a collision-resistant hash function h to process client IDs with respect to the secret numbers s and r and the parameters P and Q of a secret on an elliptic curve E. The session key Ks that encrypts the message m is Ks=enc(P,Q)rk and the header is constituted by H1=k ?i=1?N(s+Ii)R=k?i=0?NcisiR, H2=k(rP), S={I1,I2, . . . , IN}. The client restores the session key by means of A/B=en(P,Q)rk?j=1?N,j?iIj, (A/B)?j=1?N,j?iIj?1=Ks from A=en(Ki,H1)=en((s+Ii)?1P,k?i=1?N(s+Ii)R) and B=en(H2,?j=1?N,j?i(s+Ij)Q??j=1?N,j?iIjQ)=en(P,Q)rk?j=1?N,j?i Ij.
    Type: Application
    Filed: July 26, 2007
    Publication date: December 4, 2008
    Applicants: MURATA KIKAI KABUSHIKI KAISHA, RYUICHI SAKAI
    Inventor: Ryuichi SAKAI
  • Publication number: 20080234279
    Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 815, Et 808, and Et 594. The physical properties of these compounds, their preparation and therapeutic properties are also reported.
    Type: Application
    Filed: October 30, 2007
    Publication date: September 25, 2008
    Inventors: Kenneth L. Rinehart, Ryuichi Sakai
  • Patent number: 7239701
    Abstract: Mapping is carried out at a point on an elliptic curve to be utilized for elliptic encryption based on identity information (ID information) of each entity and a mapping value is set to be a public key of the entity. By using the mapping value and secret information, a secret key of each entity is generated. The entity generates a common key to be used for an encrypting process and a decrypting process by utilizing the self-secret key and the public key to be the mapping value obtained by mapping at a point on the elliptic curve based on ID information of a communication participate. In this case, pairing on the elliptic curve is utilized.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: July 3, 2007
    Assignees: Murata Machinery Ltd., Masao Kasahara, Ryuichi Sakai
    Inventors: Kiyoshi Ogishi, Ryuichi Sakai, Masao Kasahara
  • Publication number: 20060212913
    Abstract: In a remote control system to control remotely a controlled device through a network from a terminal at a remote place, the controlled device stores a channel table associating broadcast station numbers recognized by a remote control device and allocated to each broadcast station with channel numbers recognized by the controlled device and allocated to each broadcast station. This allows channel numbers to be designated remotely according to an area, even though a relation between broadcast station numbers and channel numbers is different depending on an area. The remote controller can read the channel table of the controlled device and correct the channel table according to user's operation on the terminal.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 21, 2006
    Inventors: Koji Hirose, Ryuichi Sakai, Takashi Maniwa
  • Publication number: 20060192790
    Abstract: A remote control system in which an instruction from a remote terminal is transmitted to a controlled device through a remote control device. Device unique data which is information specific to the controlled device is stored in the remote control device or the controlled device. The remote control device generates WEB display data to be displayed on the remote terminal based on a device type of the controlled device and the device unique data. Alternatively, the remote control device generates WEB display data based on the device unique data stored in the controlled device. Thus, even when a new type of controlled device is developed, or even when the function for the controlled device is extended, it does not need to modify programs for achieving functions of the remote control device. Accordingly, it facilitates a change of an operational screen of the terminal in response to those changes.
    Type: Application
    Filed: March 26, 2004
    Publication date: August 31, 2006
    Inventors: Koji Hirose, Ryuichi Sakai, Takashi Maniwa
  • Publication number: 20060044106
    Abstract: A remote control system capable of detecting an operating status of devices through the Internet at real time is provided. A remote controller (20) which enables a terminal device to control an operation of the device (30a, . . . ) through a network (100), acquires a latest address of the device for the network by communicating with the device at predetermined time intervals through the network, stores the address, transmits a status notification request to the device through the network while referring to the stored address, receives status information from the device, stores the status information received from the device, and transmits the stored status information on the device to the terminal device (10) through the network.
    Type: Application
    Filed: March 5, 2004
    Publication date: March 2, 2006
    Inventors: Koji Hirose, Ryuichi Sakai
  • Publication number: 20060030571
    Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 745B, Et 815, Et 808, Et 596, Et 597, Et 583, Et 594 and a synthetic derivative of Et 594, N-Acetyl Et 597. The physical properties of these compounds, their preparation and bioactivities are also reported.
    Type: Application
    Filed: May 18, 2005
    Publication date: February 9, 2006
    Inventors: Kenneth Rinehart, Ryuichi Sakai
  • Publication number: 20050285714
    Abstract: An apparatus and a method of remote control which can enable real time operation of a device in home from a terminal device at remote location through a network are provided. A first server (20) communicates with a terminal device (10) through Internet (100) and generates device control data for controlling the device (50a , . . . ). A second server (30) communicates with the device (50a , . . . ) in a predetermined manner to acquire and store a specific address of the device, generates transmission data which is for transmission of the received device control data from the first server (20) to the device (50a , . . . ) based on the specific address, and transmits the transmission data to the device (50a , . . . ). This allows real time control of the device from the terminal device (10) through the network to be realized.
    Type: Application
    Filed: March 5, 2004
    Publication date: December 29, 2005
    Inventors: Koji Hirose, Ryuichi Sakai
  • Patent number: 6915064
    Abstract: A video recording and reproducing apparatus is provided which is capable of, even if the number of elementary streams (ES) of bits of a program to be recorded is too large and all the elementary streams can hardly be recorded, carrying out a recording operation with ease substantially corresponding to the direction of the user. The apparatus allows an ES selector to identify the elementary streams of video data, audio data, and their relevant data video in the stream of bits received from its program selector and, when the number of the elementary streams is higher than a given setting, pick up elementary streams which satisfy the predetermined requirements while deleting the other elementary streams. The elementary streams are then recorded by a recorder/player in the apparatus. Even if the elementary streams of bits are not all recorded, the elementary streams which satisfy the predetermined requirements can readily be recorded.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Ryuichi Sakai
  • Publication number: 20040059112
    Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 745B, Et 815, Et 808, Et 596, Et 597, Et 583, Et 594 and a synthetic derivative of Et 594, N-Acetyl Et 597. The physical properties of these compounds, their preparation and bioactivities are also reported.
    Type: Application
    Filed: April 2, 2003
    Publication date: March 25, 2004
    Inventors: Kenneth L. Rinehart, Ryuichi Sakai