Patents by Inventor Takeshi Kawahara

Takeshi Kawahara 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: 20140339305
    Abstract: An authentication registration/invalidation apparatus is provided, which allows easy invalidation of an authentication tag when the authentication tag is lost, and facilitates management of authentication tags. When an RFID reader (2) receives an RFID signal including an instruction of invalidation, which is transmitted from an operation tag (10b) in a recognition area (A), an invalidation unit (32b) sets an operation mode to an invalidation enabled mode. If an RFID tag recognizer (31a) recognizes an authentication tag (10a) before or after the setting of the invalidation enabled mode, the invalidation unit 32b invalidates the authentication tag (10a), or invalidates all authentication tags (10a) that belong to a group to which the authentication tag belongs.
    Type: Application
    Filed: April 25, 2014
    Publication date: November 20, 2014
    Applicant: OPTEX CO., LTD.
    Inventors: Masanao SHIRAISHI, Mitsugu MIHARA, Hiroyuki OHBA, Takeshi KAWAHARA, Yasuhiro HOSAKI, Satoshi SOGABE, Tomoki KANEYAMA, Tomoya MASUYAMA, Kazuo KOMIYAMA
  • Patent number: 8866580
    Abstract: A power converting apparatus makes reduction of power loss possible and operates in a two-phase mode. A power converting apparatus of the inventive concept includes I-shaped block cores, each being made of a magnetic material; and E-shaped cores, each being produced by combining two L-shaped magnetic materials to each of the I-shaped cores. In each of the E-shaped cores, the block core is defined as a central leg, the other two legs are defined as a first outside leg and a second outside leg, respectively, and a closed magnetic path is configured by two E-shaped cores combined such that one of respective central legs in the two E-shaped cores, one of respective first outside legs therein, and one of respective second outside legs therein are caused to face the other of the central legs, the other of the first outside legs, and the other of the second outside legs.
    Type: Grant
    Filed: May 12, 2012
    Date of Patent: October 21, 2014
    Assignees: Shinto Holdings Co., Ltd., Nikkindenji Kogyo Co., Ltd.
    Inventors: Yuichi Hasegawa, Hiromune Ishii, Yuki Satake, Takeshi Kawahara
  • Publication number: 20130128622
    Abstract: A power converting apparatus makes reduction of power loss possible and operates in a two-phase mode. A power converting apparatus of the inventive concept includes I-shaped block cores, each being made of a magnetic material; and E-shaped cores, each being produced by combining two L-shaped magnetic materials to each of the I-shaped cores. In each of the E-shaped cores, the block core is defined as a central leg, the other two legs are defined as a first outside leg and a second outside leg, respectively, and a closed magnetic path is configured by two E-shaped cores combined such that one of respective central legs in the two E-shaped cores, one of respective first outside legs therein, and one of respective second outside legs therein are caused to face the other of the central legs, the other of the first outside legs, and the other of the second outside legs.
    Type: Application
    Filed: May 12, 2012
    Publication date: May 23, 2013
    Applicants: NIKKINDENJI KOGYO CO., LTD., SHINTO HOLDINGS CO., LTD.
    Inventors: Yuichi HASEGAWA, Hiromune ISHII, Yuki SATAKE, Takeshi KAWAHARA
  • Publication number: 20120301779
    Abstract: A battery comprises: a container including a bottom portion, long-sidewall portions each standing on a corresponding one of longer side portions of the bottom portion, short-sidewall portions each standing on a corresponding one of two shorter side portions of the bottom portion, and a welded portion in which portions of a flat plate are mutually welded; an electrode assembly housed in the container; an electrode terminal; and a lid closing the container, the container having a cuboid shape, the bottom portion being rectangular, the long-sidewall portions each being rectangular, the short-sidewall portions each being rectangular, the flat plate being made of metal and being folded, and the portions of the flat plate being mutually abutting or overlapping.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 29, 2012
    Applicant: Lithium Energy Japan
    Inventors: Noriyoshi MUNENAGA, Taku NAKAMURA, Wataru MASHIKO, Takeshi KAWAHARA
  • Patent number: 8248204
    Abstract: A tag detecting system for detecting a movement of a person or an object that mounts an RFID tag, a moving object detecting method, and an entrance/exit management system using the moving object detecting system are provided. The tag detecting system detects a specific person or object by restricting a detection area of the RFID tag to a narrow area. Since the moving object detecting method detects a piggyback, the entrance/exit system prevents the piggyback even if there are a number of persons passing through an entrance/exit gate almost at the same time.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: August 21, 2012
    Assignees: Hitachi, Ltd., Hitachi Engineering & Services Co., Ltd., Matrix Inc.
    Inventors: Masahiro Takeshima, Kazuo Tamura, Takeshi Kawahara, Masayoshi Kondou, Dai Kawarai
  • Patent number: 7724326
    Abstract: The liquid crystal display device of the invention has a plurality of pixels, each including a first electrode 111, a second electrode 131 and a vertically aligned liquid crystal layer 120 interposed between the first and second electrodes. The first electrode has at least one opening 114 or cut 113 formed at a predetermined position in the pixel. At least one shading conductive layer 116 electrically connected to the first electrode is formed at least near the at least one opening or cut. In each of the plurality of pixels, a plurality of regions in which the directions of tilt of liquid crystal molecules are different from one another are formed when at least a predetermined voltage is applied across the liquid crystal layer.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: May 25, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tsunanori Kitoh, Takeshi Kawahara, Kazuhiko Tamai, Noriaki Onishi, Yasuhiro Kume, Takaaki Okamoto
  • Publication number: 20090179742
    Abstract: A tag detecting system for detecting a movement of a person or an object that mounts an RFID tag, a moving object detecting method, and an entrance/exit management system using the moving object detecting system are provided. The tag detecting system detects a specific person or object by restricting a detection area of the RFID tag to a narrow area. Since the moving object detecting method detects a piggyback, the entrance/exit system prevents the piggyback even if there are a number of persons passing through an entrance/exit gate almost at the same time.
    Type: Application
    Filed: March 13, 2009
    Publication date: July 16, 2009
    Applicants: Hitachi, Ltd., Hitachi Engineering & Services Co., Ltd., MATRIX INC.
    Inventors: Masahiro Takeshima, Kazuo Tamura, Takeshi Kawahara
  • Publication number: 20090020049
    Abstract: The present invention relates to a waste disposing apparatus that, rather than using incineration, uses a system wherein heat is applied to a magnetic field generated by compounded granulated ores to promote the occurrence and activation of plasma, resulting in the maintenance of a high temperature in the disposing apparatus that is sufficient to subject to a high heat consumption disposing the waste placed therein.
    Type: Application
    Filed: November 30, 2006
    Publication date: January 22, 2009
    Inventors: Takeshi Kawahara, Tetsuya Yanai, Shigeji Takeda
  • Publication number: 20050185120
    Abstract: The liquid crystal display device of the invention has a plurality of pixels, each including a first electrode 111, a second electrode 131 and a vertically aligned liquid crystal layer 120 interposed between the first and second electrodes. The first electrode has at least one opening 114 or cut 113 formed at a predetermined position in the pixel. At least one shading conductive layer 116 electrically connected to the first electrode is formed at least near the at least one opening or cut. In each of the plurality of pixels, a plurality of regions in which the directions of tilt of liquid crystal molecules are different from one another are formed when at least a predetermined voltage is applied across the liquid crystal layer.
    Type: Application
    Filed: February 22, 2005
    Publication date: August 25, 2005
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tsunanori Kitoh, Takeshi Kawahara, Kazuhiko Tamai, Noriaki Onishi, Yasuhiro Kume, Takaaki Okamoto
  • Patent number: 6538382
    Abstract: A plasma display apparatus has an electronic circuit module including a rigid substrate attached to a chassis thereof and a flexible substrate partially overlapped with the rigid substrate. The rigid substrate has chips and the flexible substrate has a first portion with apertures for exposing the chips and bonding pads and a second portion positioned on the outside of the rigid substrate. Bonding wires connect terminals of the chips with the bonding pads of the flexible substrate. A reinforcing pattern or a dummy pattern is provided in at least the first portion of the flexible substrate. The reinforcing pattern provides for rigidity for the first portion of the flexible substrate for accurate positioning of the bonding pads relative to the chips.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: March 25, 2003
    Assignees: Fujitsu Limited, Fujitsu Hitachi Plasma Display Limited
    Inventors: Kenji Kimura, Takeshi Kawahara, Taizo Ohno, Satoshi Watanabe, Shigeo Iriguchi, Takayoshi Nakamura
  • Patent number: 6154382
    Abstract: A high-voltage power supply circuit receives ac input, effects rectification and successive multiplication, and outputs a high dc voltage. The high-voltage power supply circuit includes a plurality of diode bridges connected to a secondary winding of a transformer, in series by way of capacitors, that effect full-wave rectification of an ac voltage outputted from the secondary winding. The high-voltage power supply circuit further includes a plurality of capacitors provided for each of the diode bridges that accumulate charges from the output voltage that has undergone full-wave rectification. Voltage that is a multiple of the maximum value of the ac voltage within the secondary winding and the number of stages of diode bridges (an integer multiple) is outputted at each of the connection points of the diode bridges.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: November 28, 2000
    Assignee: NEC Corporation
    Inventors: Takeshi Kawahara, Kurao Nakagawa
  • Patent number: 5049872
    Abstract: A slave station at an end location of a transmission route is responsive to a polling signal issued from a master station such that if there exist data to be sent to the master station, the slave station transmits a code with a "busy" token and specifying the data to a slave station at the next upper location; and if there do not exist data to be sent to the master station, the slave station transmits a "free" token to the slave station at the next upper location. When the slave station at the upper location receives the "busy" token from the station at the lower location, the slave station at the upper location relays the entire codes receives.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: September 17, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Torao Yamanaka, Hirofumi Morimoto, Takeshi Kawahara
  • Patent number: 4860001
    Abstract: A remote monitoring and controlling system in which time information from a secondary clock in each slave station is transmitted in coded signal form to a master station in response to a time inquiry command issued from the master station. The transmitted time information and the time information of the primary clock of the master station are compared in the master station by taking into account the length of the coded signal and a transmission delay time from the corresponding slave station. The difference found by the comparison is temporarily stored in memory as time correction data to be used to correct the time information of the respective slave stations.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: August 22, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Torao Yamanaka, Takeshi Kawahara
  • Patent number: 4799162
    Abstract: The route bus operation controlling system of this invention includes mobile radio units, ground radio unit and central processor, wherein the central processor is provided with a memory for storing the actual running time of buses in specific section of each bus service route and other service information and a processing unit which reads out the service information stored in the memory to calculate coefficient data which allows comparison among delays in each bus route, applies a weight to the calculated result basing on the old and new actual values, calculated as sample values the average movement values of buses which have run in the specified section, calculates as sample values the expected values of the bus under forecast, and cumulates the expected running time for each specified section, and wherein the mobile radio units and ground radio units are provided with display units for displaying service information of a specific section of route and the entire route.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: January 17, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kiyoshi Shinkawa, Takeshi Kawahara, Hideki Hayakawa, Masaru Mori
  • Patent number: 4791571
    Abstract: A route bus service controlling system comprising ground radio unit installed at a terminal or start-and-end point of bus service routes, a turn point of each route and a plurality of passage points therebetween and serving to detect the passage time of each route bus at every point, the ground radio units being further capable of sending the detected time signal to a central service controller and, after receiving service information from the central service controller, transmitting such information to each route bus; the central service controller for first receiving the actual run information of each route bus from the ground radio units, then making up, on the basis of the received service information, modified service schedules for the buses in the individual route sections so as to realize an optimal time interval service of all the buses running on the respective routes, and transmitting via the ground radio units to the corresponding buses the modified service schedules with various conditions added t
    Type: Grant
    Filed: October 8, 1986
    Date of Patent: December 13, 1988
    Assignees: Tokyu Corporation, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shinichi Takahashi, Hisao Ishii, deceased, Kiyoshi Shinkawa, Takeshi Kawahara, Toshiyuki Manita