Patents by Inventor Kenji Ogawa

Kenji Ogawa 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: 8303293
    Abstract: Provided is a process and an apparatus for producing at low cost gas hydrate pellets having an excellent storability. A gas hydrate generated from a raw-material gas and raw-material water is dewatered and simultaneously molded into pellets with compression-molding means under conditions suitable for generating the gas hydrate while the gas hydrate is generated from the raw-material gas and the raw-material water that exist among particles of the gas hydrate.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: November 6, 2012
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Toru Iwasaki, Masahiro Takahashi, Takashi Arai, Shinji Takahashi, Kouhei Takamoto, Kenji Ogawa, Masafumi Aoba
  • Patent number: 8232983
    Abstract: In the method for driving a plasma display panel and the plasma display device, the scan electrodes of the plasma display panel are divided into two scan electrode groups, the address period of subfields is divided into two address periods corresponding to the two scan electrode groups, and at least in one address period, the scan electrodes belonging to the scan electrode group provided with scan pulses are sequentially provided with scan pulses shifting from second voltage higher than scan pulse voltage to scan pulse voltage and shifting again to second voltage, and the scan electrodes belonging to the scan electrode group not provided with scan pulses are provided with either third voltage higher than scan pulse voltage or fourth voltage higher than second voltage and third voltage, and with third voltage at least while scan pulse voltage is applied to adjacent scan electrodes.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 31, 2012
    Assignee: Panasonic Corporation
    Inventors: Kenji Ogawa, Keiji Akamatsu, Yasuhiro Arai
  • Patent number: 8212477
    Abstract: A plasma display panel has a first substrate, plural pairs of display electrodes, a second substrate, and plural data electrodes. Each pair of the display electrodes is made up of a scanning electrode and a sustain electrode which are arranged parallel to each other on the first substrate. The second substrate is disposed opposite to the first substrate. A discharge space is formed between the first substrate and second substrate. The data electrodes are arranged in a direction perpendicular to the display electrodes on the second substrate. The data electrode is wider in peripheral portion of the second substrate than in a central portion of the second substrate.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: July 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Tomohiro Murakoso, Kenji Ogawa, Toru Ando, Kentaro Ueda, Yohei Koshio, Ryuichi Murai
  • Patent number: 8212745
    Abstract: In a driving method of a panel, one field period is formed by arranging a plurality of subfields that have an address period for selectively causing address discharge in a discharge cell, and a sustain period for causing as many sustain discharges as the number corresponding to luminance weight in the discharge cell. One field period is formed by arranging a plurality of subfield groups having a plurality of subfields whose luminance weights monotonically increase. In the discharge cell for causing address discharge in a certain subfield other than the head subfield in each subfield group, address discharge is caused even in the head subfield.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: July 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Minoru Takeda, Kenji Ogawa, Keiji Akamatsu
  • Patent number: 8212746
    Abstract: In a driving method of a panel, one field period is formed by arranging a plurality of subfields that have an initializing period for causing initializing discharge in a discharge cell, an address period for selectively causing address discharge in the discharge cell, and a sustain period for causing as many sustain discharges as the number corresponding to luminance weight in the discharge cell. One field period is formed by arranging a plurality of subfield groups having a plurality of subfields whose luminance weights monotonically increase. A holding period when discharge is not caused is disposed before the head subfield belonging to at least one subfield group of the plurality of subfield groups. In the initializing period of the head subfield belonging to at least one subfield group, an initializing operation of causing initializing discharge is performed in the discharge cell where the sustain discharge has been performed in the sustain period of the immediately preceding subfield.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: July 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Keiji Akamatsu, Minoru Takeda, Kenji Ogawa, Hiroshi Ibaraki
  • Publication number: 20120165553
    Abstract: [Problem to be Solved] An immunostimulant highly safe and administrable for a long period of time as well as a pharmaceutical composition containing the immunostimulant as an active ingredient and drink or food products for immunostimulation are developed and provided. [Solution] An immunostimulant containing a compound represented by the following general formula (I) or a pharmaceutically acceptable salt thereof as an active ingredient is provided. R1 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, R2 to R5 are independently a hydrogen atom, or a substituted or unsubstituted lower alkyl or lower acyl group, X is —(CH2)2—, —(CH2)3—, —(CH2)4—, —CO—CH2—, —CO—(CH2)2—, —CO—(CH2)3—, —CH2—CO—CH2—, —CO—O—CH2—, —CO—O—(CH2)2—, —O—CO—CH2—, —O—CO—(CH2)2—, —CH2—O—CH2—, —CH2—O—(CH2)2—, —O—CH2—, —O—(CH2)2—, —O—(CH2)3—, —NHY—CO—CH2—, —NHYCO—(CH2)2—, —CO—NHY—CH2— or —CO—NHY—(CH2)2—, Y herein is a hydrogen atom or a lower alkyl group.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 28, 2012
    Applicant: RIKEN
    Inventors: Kenji Ogawa, Takeshi Nakano
  • Patent number: 8207913
    Abstract: A plasma display panel; a scan electrode drive circuit for generating a gently decreasing downward inclined waveform voltage in an initializing period, a gently increasing first inclined waveform voltage, and a second inclined waveform voltage having a steeper gradient than the first inclined waveform voltage and decreasing immediately after the increasing waveform voltage reaches a predetermined potential in the last part of the sustain period. The lowest voltage in the downward inclined waveform voltage is switched at a first voltage, a second voltage higher than the first voltage and a third voltage higher than the second voltage to generate a downward inclined waveform voltage. The lowest voltage is switched according to the detected temperature to generate the downward inclined waveform voltage.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: June 26, 2012
    Assignee: Panasonic Corporation
    Inventors: Hiroshi Ibaraki, Minoru Takeda, Keiji Akamatsu, Kenji Ogawa, Nobuhiko Nakamura
  • Publication number: 20120152933
    Abstract: To reduce the air exhausted to outside a main body after cooling a heat generating component from being taken in again from an intake port. The flow of cooling wind cooled the heat generating component is discharged from an exhaust port 21 at other than a first peripheral wall 19 with the flow bent inside the main body. When rectified inside the main body and discharged from the exhaust port 21, the cooling wind grows to a flow speed of a certain extent to become an exhaust air that a flowing direction is clearly defined, so that it is less likely to be taken in again from the intake port 20, it is less likely to be subjected to the influence of obstacles of the exhaust port, use can be made in a kitchen cabinet of the intake and exhaust air at the back side, and it is satisfactory and is less likely to be damaged without involving sense of unpleasantness by the exhaust air to the user.
    Type: Application
    Filed: March 14, 2011
    Publication date: June 21, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Eiji Matsui, Akira Kataoka, Takehiko Shigeoka, Takaaki Kusaka, Kenji Ogawa
  • Publication number: 20120146974
    Abstract: A plasma display panel has a first substrate, plural pairs of display electrodes, a second substrate, and plural data electrodes. Each pair of the display electrodes is made up of a scanning electrode and a sustain electrode which are arranged parallel to each other on the first substrate. The second substrate is disposed opposite to the first substrate. A discharge space is formed between the first substrate and second substrate. The data electrodes are arranged in a direction perpendicular to the display electrodes on the second substrate. The data electrode is wider in peripheral portion of the second substrate than in a central portion of the second substrate.
    Type: Application
    Filed: February 22, 2012
    Publication date: June 14, 2012
    Applicant: Panasonic Corporation
    Inventors: Tomohiro MURAKOSO, Kenji Ogawa, Toru Ando, Kentaro Ueda, Yohei Koshio, Ryuichi Murai
  • Publication number: 20120112972
    Abstract: Disclosed is an antenna device that improves the antenna gain and reduces the correlation for a MIMO antenna. Said antenna device is provided with a first housing (101) and a second housing (102). In a folding handheld terminal wherein the first housing (101) and the second housing (102) are rotatably connected by a hinge (202), the first housing (101) is provided with a first power-supply unit (107) and the second housing (102) is provided with a second power-supply unit (108). An antenna element (201) is provided inside the first housing (101) near the hinge (202). One end of the antenna element is open, and the first power-supply unit (107) and second power-supply unit (108) supply power through the other end of the antenna.
    Type: Application
    Filed: July 15, 2010
    Publication date: May 10, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: Kenji Ogawa
  • Publication number: 20120075283
    Abstract: In a driving method for a plasma display panel, in the initializing period in at least one of a plurality of subfields, selective initializing operation is performed that selectively causes initializing discharge only in a discharge cell having undergone address discharge in an immediately preceding address period. The selective initializing operation includes the step of applying first voltage to the sustain electrode and applying an up-ramp waveform voltage to the scan electrode, the step of applying a first down-ramp waveform voltage to the scan electrode and then applying a positive rectangular voltage to it, and the step of applying second voltage higher than the first voltage to the sustain electrode and applying a second down-ramp waveform voltage to the scan electrode.
    Type: Application
    Filed: June 7, 2010
    Publication date: March 29, 2012
    Applicant: Panasonic Corporation
    Inventors: Yutaka Yoshihama, Kenji Ogawa, Takateru Sawada, Toshiyuki Maeda, Keiji Akamatsu
  • Publication number: 20120050253
    Abstract: An unnecessary discharge caused in the discharge cells in an initializing operation is prevented. This reduces the luminance of black level in a display image and stabilizes the address discharge at the same time, thus enhancing the image display quality. A plasma display panel that has a plurality of discharge cells having data electrodes and display electrode pairs, each formed of a scan electrode and a sustain electrode, is driven for gradation display such that a plurality of subfields is set in one field and each of the subfields has an initializing period, an address period, and a sustain period. For the above purpose, in the driving method for the plasma display panel, the following operations are performed. In the address period of a predetermined subfield, after the application of a scan pulse to all the scan electrodes is completed, a ramp voltage gently falling from a first voltage is applied to the sustain electrodes.
    Type: Application
    Filed: May 13, 2010
    Publication date: March 1, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Yuichi Sakai, Kenji Ogawa, Yutaka Yoshihama, Keiji Akamatsu
  • Publication number: 20120026142
    Abstract: The luminance of black level in an image displayed on a plasma display panel is reduced to enhance the contrast and image display quality. For this purpose, in an initializing period, one of a forced initializing waveform, a selective initializing waveform, and a non-initializing waveform is applied to scan electrodes. Further, one field is formed of a special initializing subfield where the forced initializing waveform and the non-initializing waveform are selectively generated, and a plurality of selective initializing subfields where only the selective initializing waveform is generated. The number of forced initializing waveforms applied to one scan electrode is one in one field group. The non-initializing waveform is applied to the scan electrodes on both sides of the scan electrode applied with the forced initializing waveform in a special initializing subfield, in at least two special initializing subfields, i.e.
    Type: Application
    Filed: April 2, 2010
    Publication date: February 2, 2012
    Applicant: Panasonic Corporation
    Inventors: Yutaka Yoshihama, Kenji Ogawa
  • Patent number: 8096798
    Abstract: A molding machine for production of gas hydrate pellets under a high pressure in gas hydrate forming conditions, which is inexpensive through minimizing of the use of expensive mechanical seal. The molding machine comprises two forming rolls each fitted to a rotary shaft whose both ends are supported by bearings; a drive unit for rotating the forming rolls; a screw transfer unit for supplying powder to the forming rolls; and a high-pressure vessel, wherein the bearings, the rotary shaft and the forming rolls are all disposed in the high-pressure vessel.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 17, 2012
    Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., The Chugoku Electric Power Co., Inc.
    Inventors: Kenji Watanabe, Kiyoaki Suganoya, Takahiro Yoshida, Kenji Ogawa, Shigeru Nanbara, Shinji Imai
  • Patent number: 8089426
    Abstract: A plurality of subfields of a field period includes a subfield for performing an every-cell initialization causing an initial discharge in every discharge cell in an initialization period, and includes a subfield for performing a selective initialization causing the initial discharge in a predetermined discharge cell in the initialization period. In a low-luminance subfield, the every-cell initialization is performed, and a low-luminance subfield is subsequently located (in the field period) to the subfield for the every-cell initialization. In a sustain period of the subfield for performing the every-cell initialization or a sustain period of the low-luminance subfield, a width of a first sustain pulse is set wider than a width of a second sustain pulse, and the width of the second sustain pulse is set wider than the width of a third sustain pulse and subsequent others.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: January 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Kenji Ogawa, Tomohiro Murakoso, Yoshiki Tsujita, Kenji Sasaki, Yohei Koshio
  • Patent number: 8085222
    Abstract: A plasma display device and a driving method thereof are provided. The plasma display device has a panel having a plurality of discharge cells including a display electrode pair that is formed of a scan electrode and a sustain electrode, and a temperature detecting circuit for detecting the ambient temperature of the panel and outputting the detected temperature. In the driving method, an unusual charge erasing period when a rectangular waveform voltage is applied to the scan electrode is disposed between the initializing period and address period of at least one of a plurality of subfields, and the number of subfields having the unusual charge erasing period is controlled based on the detected temperature detected by the temperature detecting circuit.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: December 27, 2011
    Assignee: Panasonic Corporation
    Inventors: Taku Okada, Minoru Takeda, Yohei Koshio, Shinichiro Hashimoto, Kenji Ogawa
  • Patent number: 8031134
    Abstract: In the initializing period of each of sub-fields comprising one field, one of all-cell initializing operation and selective initializing operation is performed. The all-cell initializing operation causes initializing discharge in all the discharge cells for displaying an image. The selective initializing operation selectively causes initializing discharge only in the discharge cells subjected to sustaining discharge in the preceding sub-field. Provided in the all-cell initializing period is an abnormal charge erasing part in which application of a rectangular waveform voltage to the scan electrodes causes self-erasing discharge in the discharge cells having excessive wall voltage accumulated therein.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: October 4, 2011
    Assignee: Panasonic Corporation
    Inventors: Kenji Ogawa, Shigeo Kigo, Minoru Takeda
  • Publication number: 20110148724
    Abstract: Disclosed is an antenna device that achieves greater reduction in size and a wider bandwidth. The antenna device has a box-type antenna element (102) and a folded-back monopole element (107), which are connected. The device is grounded via a grounding terminal (103) at one apex of the box-type antenna element (102), and is also connected to an electricity supply unit (106) of a substrate (101) via a feed terminal (105) at the apex which forms a long side with the grounded apex. In addition, the length from the grounding point (104) of the box-type antenna element (102) to the tip of the monopole element (107) is set to one-quarter the wavelength of a first resonant frequency, and the length from the electricity supply unit (106) to the tip of the monopole element (107) is set to one-quarter the wavelength of a second resonant frequency.
    Type: Application
    Filed: August 11, 2009
    Publication date: June 23, 2011
    Applicant: Panasonic Corporation
    Inventor: Kenji Ogawa
  • Publication number: 20110122112
    Abstract: Even in a plasma display panel of large screen size and high definition, address discharge is caused stably. A plasma display device has a plasma display panel and a scan electrode driving circuit. The plasma display panel includes a discharge cell having a display electrode pair that is formed of a scan electrode and a sustain electrode. A plurality of subfields having an initializing period, an address period, and a sustain period are disposed in one field period. The scan electrode driving circuit generates an increasing first ramp voltage in the initializing period of at least one subfield in one field period, generates sustain pulse voltage that varies from a base potential to a potential for causing sustain discharge in the sustain period, and generates second ramp voltage that is increased and is dropped immediately after reaching a predetermined potential at the end of the sustain period.
    Type: Application
    Filed: March 28, 2008
    Publication date: May 26, 2011
    Applicant: Panasonic Corporation
    Inventors: Shunsuke Kawai, Kenji Ogawa, Shinichiro Hashimoto
  • Patent number: 7859784
    Abstract: A data storage device, that stores write data by a head, rewrites data on an adjacent track at a timing which is different from write retry of detecting a head off track when data may be written to an adjacent track. When an off track error, which affects data on an adjacent track, is generated by a write command, rewrite processing of this write command is not executed immediately, but a rewrite request including information on the track to be rewritten and the shift amount of the off track is held. And the rewrite request being held is executed at a timing which is different from the write retry. So rewrite processing can be executed after vibration, which caused the off track, stops, and the generation of an off track error during rewrite processing and the generation of further off track writing can be prevented.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: December 28, 2010
    Assignee: Toshiba Storage Device Corporation
    Inventor: Kenji Ogawa