Patents by Inventor Kenji Matsukawa

Kenji Matsukawa 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: 20230062778
    Abstract: An information processing apparatus includes a processor configured to, if a facility that is to be reserved for use is determined to have a fault in a communication function in view of a communication status with outside, perform a restore operation on the facility to restore the communication function.
    Type: Application
    Filed: March 20, 2022
    Publication date: March 2, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kota NAKAYAMA, Kenji MATSUKAWA, Toru HATORI, Kengo TOKUCHI
  • Patent number: 10764768
    Abstract: A communication apparatus includes a transmitting and receiving unit that is connected to a network and that transmits and receives data, a relaying unit that, when data is received through a communication that is not addressed to the communication apparatus, relays the communication, and a discarding unit that, when data is received through the same communication as a communication that has been relayed previously, discards the data.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 1, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Kenji Matsukawa
  • Publication number: 20190313261
    Abstract: A communication apparatus includes a transmitting and receiving unit that is connected to a network and that transmits and receives data, a relaying unit that, when data is received through a communication that is not addressed to the communication apparatus, relays the communication, and a discarding unit that, when data is received through the same communication as a communication that has been relayed previously, discards the data.
    Type: Application
    Filed: October 23, 2018
    Publication date: October 10, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Kenji Matsukawa
  • Publication number: 20170185172
    Abstract: Provided is an electronic pen including a rod-like member that includes a pen tip at a front and is supported movably in a longitudinal direction, an electronic component, at least a portion of which is provided on a rear side of the rod-like member opposite to a side on which the pen tip is included, a casing that has a tubular shape and stores the rod-like member and the electronic component, and a transmission member that is provided in a space interposed between the electronic component and an inner circumferential surface of the casing and transmits an externally received force at a rear of the rod-like member to move the rod-like member in the longitudinal direction.
    Type: Application
    Filed: May 9, 2016
    Publication date: June 29, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Nobuhiro KITAGAWA, Eisuke OSAKABE, Koichi YOSHINO, Akihiko NAYA, Makoto AIHARA, Kenji MATSUKAWA, Shinichiro TANIGUCHI, Yasuaki KONISHI, Yoshinori YAMAGUCHI
  • Patent number: 6925079
    Abstract: An IP address duplication detection method using an address resolution protocol is used in a network system in which an IP address duplication diagnosis/detection host and a plurality of check target hosts are connected to a single LAN, all the hosts are respectively assigned MAC addresses as hardware addresses unique to devices without any duplication, and an address resolution protocol aimed at acquiring a MAC address of a remote device from an IP address is installed in each host. In this method, an ARP request packet containing a check target IP address in the same subnet as for the IP address duplication diagnosis/detection host is sent out from the IP address duplication diagnosis/detection host to each of the check target hosts through the LAN. IP address duplication is detected depending on whether an ARP reply packet as a response packet for the ARP request packet is returned from each of the check target hosts to the IP address duplication diagnosis/detection host through the LAN.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: August 2, 2005
    Assignee: NEC Corporation
    Inventor: Kenji Matsukawa
  • Patent number: 6810010
    Abstract: A redundant LAN system is characterized in that with a redundant LAN system which includes sub-LAN systems with redundancy incorporated by an active and a stand-by mode, a plurality of the sub-LAN systems being connected to the same LAN segment, immediately after a sub-LAN system on an active line is switched, ARP packets for updating ARP cache tables of the redundant LAN system from MAC addresses of a previously active line to MAC addresses of a new active line, are transmitted from a sub-LAN system on the new active line to all communication devices connected to the same LAN segment as the sub-LAN system on the new active line.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: October 26, 2004
    Assignee: NEC Corporation
    Inventor: Kenji Matsukawa
  • Patent number: 6767980
    Abstract: The present invention provides a reactive diluent composition which overcomes drawbacks of both the radical-cure and the cationic-cure reactive diluents and can be applied in a broad variety of uses such as paints, inks, adhesives, pressure sensitive adhesives, surface-modifiers, and molding materials; a curable resin composition containing the same; an activated energy ray-curable resin composition; and an activated energy ray-curable ink composition for ink-jet printing. A reactive diluent composition comprising a vinyl ether group-containing (meth)acrylic ester represented by the following general formula (1): CH2═CR1—COO—R2—O—CH═CH—R3  (1) wherein R1 represents a hydrogen atom or a methyl group; R2 represents an organic residue of 2 to 20 carbon atoms; R3 represents a hydrogen atom or an organic residue of 1 to 11 carbon atoms and a hydroxyl group-containing polymerizable compound and/or divinyl ether.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: July 27, 2004
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Keiji Yurugi, Akihiko Fukada, Kenji Matsukawa
  • Publication number: 20030199655
    Abstract: The present invention provides a reactive diluent composition which overcomes drawbacks of both the radical-cure and the cationic-cure reactive diluents and can be applied in a broad variety of uses such as paints, inks, adhesives, pressure sensitive adhesives, surface-modifiers, and molding materials; a curable resin composition containing the same; an activated energy ray-curable resin composition; and an activated energy ray-curable ink composition for ink-jet printing.
    Type: Application
    Filed: April 19, 2002
    Publication date: October 23, 2003
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Keiji Yurugi, Akihiko Fukada, Kenji Matsukawa
  • Patent number: 6384151
    Abstract: The present invention discloses a process for producing a dicyclopentadiene-modified unsaturated polyester. The process includes a first step of reacting a reaction mixture of maleic anhydride (MA) and water (H2O) with dicyclopentadiene (DCPD) and a second step of reacting the reaction product obtained in the first step with a polyhydric alcohol, or a polyhydric alcohol and a polybasic acid, to obtain an unsaturated polyester modified with dicyclopentadiene. In the first step of the process, (1) a molar ratio of water to dicyclopentadiene is greater than 1 and a molar ratio of maleic anhydride to dicyclopentadiene is 1.2 or more, (2) a molar ratio of water to maleic anhydride is 1 or less, or (3) both of the features (1) and (2) are satisfied. The present invention also discloses a polyester resin composition containing the modified unsaturated polyester and a radically polymerizable monomer, and a molding material containing the resin composition as a main component.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: May 7, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kenji Matsukawa, Toshio Hayashiya, Koji Takabatake, Katsura Hayashi, Hironori Funaki
  • Publication number: 20010017857
    Abstract: An IP address duplication detection method using an address resolution protocol is used in a network system in which an IP address duplication diagnosis/detection host and a plurality of check target hosts are connected to a single LAN, all the hosts are respectively assigned MAC addresses as hardware addresses unique to devices without any duplication, and an address resolution protocol aimed at acquiring a MAC address of a remote device from an IP address is installed in each host. In this method, an ARP request packet containing a check target IP address in the same subnet as for the IP address duplication diagnosis/detection host is sent out from the IP address duplication diagnosis/detection host to each of the check target hosts through the LAN. IP address duplication is detected depending on whether an ARP reply packet as a response packet for the ARP request packet is returned from each of the check target hosts to the IP address duplication diagnosis/detection host through the LAN.
    Type: Application
    Filed: February 23, 2001
    Publication date: August 30, 2001
    Inventor: Kenji Matsukawa
  • Patent number: 5770653
    Abstract: A resin composition includes a dicyclopentenyl-group containing unsaturated polyester resin, a phenothiazine derivative (a) and an anion producing compound (b). On the other hand, resin composition includes a thermosetting resin, a phenothiazine derivative (a), an anion producing compound (b) and a phosphorous ester (c). A manufacturing method of resin composition includes the step of obtaining a dicyclopentenyl-group-containing unsaturated polyester by polycondensing unsaturated polyester material including a compound having a dicyclopentenyl group, and the step of mixing a cross-linking monomer with the obtained dicyclopentenyl-group-containing unsaturated polyester, wherein the phenothiazine (a) and the anion producing compound (b) are added in at least one of those steps.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: June 23, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kenji Matsukawa, Toshio Hayashiya, Daisaku Yamamoto