Patents Assigned to Creative Technologies, Corporation
  • Patent number: 11911863
    Abstract: An attachment and detachment device that excels in responsiveness to attachment and detachment of a workpiece even when the workpiece is thin while utilizing an electrostatic chuck method is provided. The attachment and detachment device that enables suction and separation of a workpiece includes a machinable ceramic layer, an adhesion activating layer provided on the machinable ceramic layer, an electrode layer provided on the adhesion activating layer, and a dielectric layer provided on the electrode layer, wherein the electrode layer is covered with the adhesion activating layer and the dielectric layer, and the dielectric layer has a volume resistivity of 109 to 1012 ?·cm.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: February 27, 2024
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventor: Masaru Ozawa
  • Patent number: 11866281
    Abstract: Provided is an electrostatic adsorption body capable of exhibiting a high adsorption force, especially with respect to a highly insulative sheet-like object to be adsorbed, such as a cloth, while using an electrical adsorption force. This electrostatic adsorption body, which uses electrostatic force to adsorb an object to be adsorbed, is provided with: a laminate sheet in which a 20-200 ?m-thick insulator, a 1-20 ?m-thick electrode layer, and a 20-200 ?m-thick resin film are sequentially laminated; and a power supply device that applies a voltage to the electrode layer, wherein the resin film at least has a tensile modulus of 1 MPa or more and less than 100 MPa and a volume resistivity of 1×1010-1013 ? cm, the electrode layer is composed of a bipolar electrode including a positive electrode and a negative electrode, and an object to be adsorbed is adsorbed using the resin film as an adsorption surface due to an electrostatic adsorption force that is generated by applying a voltage to the electrode layer.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 9, 2024
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Daiki Kaneko, Yoshiaki Tatsumi, Shinsuke Hirano
  • Publication number: 20230390945
    Abstract: To provide an electrostatic attractor having excellent durability and capable of achieving more reliable attraction and gripping of an object to be attracted with electrostatic force. An electrostatic attractor includes a laminate sheet formed by sequentially laminating at least a first soft polymeric organic substance, an electrode, and a second soft polymeric organic substance, and a power source device configured to apply voltage to the electrode, electrostatic force generated by applying voltage to the electrode being used to attract and grasp an object to be attracted, with one of the soft polymeric organic substances as a contact surface, in which the first soft polymeric organic substance and/or the second soft polymeric organic substance have tensile modulus of 1 MPa or more and less than 100 MPa, and volume resistivity of 1×108 to 1013 ?·cm, and the electrode is a fiber component subjected to electroconductive treatment. A robot hand includes the electrostatic attractor.
    Type: Application
    Filed: September 22, 2021
    Publication date: December 7, 2023
    Applicant: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Kehui LYU, Yoshiaki TATSUMI, Shinsuke HIRANO
  • Patent number: 11766493
    Abstract: Provided are a headgear stand and a headgear cleaner that is small-sized and has low power consumption, and that is capable of sterilizing and deodorizing headgear made of any material. A headgear cleaner 1-1 is provided with an ozone generator 2 and a voltage supply part 5. The ozone generator 2 is constituted from an ozone generator body 3-1 and a connecting part 4. The ozone generator body 3-1 forms a shape in which twelve leaf parts extend radially. The voltage supply part 5 supplies a voltage necessary for generating ozone to the ozone generator 2.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: September 26, 2023
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Satomi Koyama, Shinsuke Hirano, Yoshiaki Tatsumi
  • Patent number: 11618040
    Abstract: Provided is an air cleaner that can take a large amount of air in a large space into a dust collector with good efficiency while being lightweight and having easy maintenance. An air cleaner is provided with a drone and a dust collector. The drone has a main body unit and propellers attached to the tips of frames. The dust collector has electric discharge electrodes and a dust collection electrode. The electric discharge electrodes are connected to a booster unit within a central chamber. The booster unit is electrically connected to a control unit in the main body unit. Electric discharge is formed between the dust collection electrode and the electric discharge electrodes, and dust particles in the air are charged and collected by the dust collection electrode.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: April 4, 2023
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Kazuki Tsuboi, Shinsuke Hirano, Yoshiaki Tatsumi, Li Luo
  • Publication number: 20220258293
    Abstract: An attachment and detachment device that excels in responsiveness to attachment and detachment of a workpiece even when the workpiece is thin while utilizing an electrostatic chuck method is provided. The attachment and detachment device that enables suction and separation of a workpiece includes a machinable ceramic layer, an adhesion activating layer provided on the machinable ceramic layer, an electrode layer provided on the adhesion activating layer, and a dielectric layer provided on the electrode layer, wherein the electrode layer is covered with the adhesion activating layer and the dielectric layer, and the dielectric layer has a volume resistivity of 109 to 1012 ?·cm.
    Type: Application
    Filed: August 31, 2020
    Publication date: August 18, 2022
    Applicant: CREATIVE TECHNOLOGY CORPORATION
    Inventor: Masaru OZAWA
  • Publication number: 20210300698
    Abstract: Provided is an electrostatic adsorption body capable of exhibiting a high adsorption force, especially with respect to a highly insulative sheet-like object to be adsorbed, such as a cloth, while using an electrical adsorption force. This electrostatic adsorption body, which uses electrostatic force to adsorb an object to be adsorbed, is provided with: a laminate sheet in which a 20-200 ?m-thick insulator, a 1-20 ?m-thick electrode layer, and a 20-200 ?m-thick resin film are sequentially laminated; and a power supply device that applies a voltage to the electrode layer, wherein the resin film at least has a tensile modulus of 1 MPa or more and less than 100 MPa and a volume resistivity of 1×1010-1013 ? cm, the electrode layer is composed of a bipolar electrode including a positive electrode and a negative electrode, and an object to be adsorbed is adsorbed using the resin film as an adsorption surface due to an electrostatic adsorption force that is generated by applying a voltage to the electrode layer.
    Type: Application
    Filed: August 1, 2019
    Publication date: September 30, 2021
    Applicant: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Daiki KANEKO, Yoshiaki TATSUMI, Shinsuke HIRANO
  • Patent number: 11121649
    Abstract: An electrostatic workpiece-holding method includes an initialization step, a static elimination step, a workpiece setting step, a workpiece attracting step, and a workpiece release step. The initialization step is a step of applying a positive voltage to electrode of the electrostatic attracting part while applying a negative voltage to electrode. The static elimination step is a step of removing the static charge on the surface of the electrostatic attracting part. The workpiece setting step is a step of placing the workpiece in contact with the surface of the electrostatic attracting part. The workpiece attracting step is a step of interrupting the application of the positive voltage to electrode of the electrostatic attracting part and the application of the negative voltage to electrode. The workpiece release step is a step of applying the positive voltage to electrode of the electrostatic attracting part while applying the negative voltage to electrode.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: September 14, 2021
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventor: Masaru Ozawa
  • Publication number: 20210166956
    Abstract: Provided is a cleaning device that can prevent reduction of an electrostatic clamping force in a vacuum state and can remove foreign matter in a vacuum processing chamber of a semiconductor manufacturing apparatus. The cleaning device includes: a foreign matter attraction unit 4 in which attraction electrodes 3 composed of a pair of electrodes are provided inside an insulator; and an attraction control unit 5 that turns on a control switch to charge the attraction electrodes and generate an electrostatic clamping force on a surface of the insulator to enable attraction of foreign matter, wherein the control switch of the attraction control unit 5 is a remotely-operable switch that is externally operable, and foreign matter in the vacuum processing chamber can be removed by an electrostatic clamping force generated in a vacuum state by turning on the control switch for the cleaning device in a vacuum closed space closed in the vacuum state.
    Type: Application
    Filed: August 23, 2019
    Publication date: June 3, 2021
    Applicant: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki TATSUMI, Shinsuke HIRANO, Kazuaki TAHARA
  • Publication number: 20210038154
    Abstract: Provided is an attachment pad that can be attached to and held on an attachment target substance such as human skin by an electrical attachment force. An attachment pad, which is used in a state of being attached to an attachment target substance, includes: a laminate sheet in which a first resin film having a thickness of 20 to 200 ?m, an electrode layer having a thickness of 1 to 20 ?m, and a second resin film having a thickness of 20 to 200 ?m are sequentially laminated; and a power supply device for applying a voltage to the electrode layer, wherein at least the second resin film has a tensile elastic modulus of 1 MPa or more and less than 100 MPa and a volume resistivity of 1×1010 to 1×1013 ?·cm, and the attachment pad is attached to the attachment target substance onto one surface of the second resin film as an attachment surface by an electrical attachment force generated by voltage application to the electrode layer.
    Type: Application
    Filed: March 14, 2019
    Publication date: February 11, 2021
    Applicant: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki TATSUMI, Shinsuke HIRANO, Kazuki TSUBOI, Daiki KANEKO
  • Patent number: 10737277
    Abstract: An air cleaner includes a flying body having a main body unit in which a control unit controlling flying movement is stored, and a propeller disposed around the main body as propulsion for floating the flying body; and a dust collector connected to the flying body, and including an intake opening and an exhaust opening. The propeller is disposed inside or under the dust collector, the dust collector electrostatically attracts dust in air flowing from the intake opening, and the flying body is a drone structured so that the propeller takes in air from an upper side and exhausts the air to a lower side.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: August 11, 2020
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Li Luo, Yoshiaki Tatsumi, Kazuki Tsuboi
  • Patent number: 10485889
    Abstract: A sterilization case can be reduced, and it is possible to reliably sterilize not only the surface of a mobile communication device but hidden portions thereof as well. A sterilization case includes a case main body and a cover body. The case main body includes a voltage supplying part and a loading part having an electrode sheet. The voltage supplying part includes a boosting circuit, a direct-current conversion circuit, a switch circuit, and a sterilization meter. The boosting circuit supplies the voltage necessary to generate ozone to the electrode sheet. The direct-current conversion circuit performs conversion to a power source voltage of a smartphone as the mobile communication device and outputs to a male connector. The male connector can be connected to a female connector of the smartphone. The cover body is attached to the case main body so as to be able to open and close.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 26, 2019
    Assignees: CREATIVE TECHNOLOGY CORPORATION, MATSUDA DESIGN LTD
    Inventors: Mutsumi Kusano, Yoshiaki Tatsumi, Li Luo, Kazuki Tsuboi, Satomi Koyama, Takeshi Matsuda, Shujiro Hayashi
  • Patent number: 10376606
    Abstract: A sterilizing sheet is excellent in terms of saving space when a sterilizing operation is being performed, and sterilizing objects of various sizes. This sterilizing sheet is provided with a flexible sheet body, a sheet accommodating body and a handle. The sheet body is formed from a dielectric and a pair of electrodes accommodated inside the dielectric. The sheet accommodating body is a cylindrical body in which the sheet body is accommodated to be capable of being pulled out and rewound, and is provided with a case, a rotating body and a rewinding mechanism. The rewinding mechanism is a mechanism for automatically rewinding the sheet body, when pulled out from the sheet accommodating body, back into the sheet accommodating body. The handle is attached to a distal end portion of the sheet body, and includes, inside the handle, a battery, a switch mechanism, a booster circuit and a monitoring circuit.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: August 13, 2019
    Assignees: CREATIVE TECHNOLOGY CORPORATION, MATSUDA DESIGN LTD
    Inventors: Satomi Koyama, Yoshiaki Tatsumi, Li Luo, Kazuki Tsuboi, Mutsumi Kusano, Takeshi Matsuda, Shujiro Hayashi
  • Patent number: 10357781
    Abstract: A dust collection device can be fitted to windows in a room, thus not only cleaning air while ventilating air within a space targeted for cleaning but also cleaning air outside of the space. A dust collection device is constructed by laminating first insulation type electrodes and second insulation type electrodes alternately via spacers. The insulation type electrodes have a configuration in which both sides of first electrodes (second electrodes) are coated by first insulating layers (second insulating layers). Furthermore, a power supply is connected to the electrodes, and the electrodes are grounded. In addition, a plurality of first through holes (second through holes) is provided in rows in the insulation type electrodes. Furthermore, the positions of the through holes in the insulation type electrodes are arranged in a plane view so as to be a prescribed distance from the positions of the through holes in the insulation type electrodes.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 23, 2019
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventor: Li Luo
  • Patent number: 10157758
    Abstract: Provided are a work heating device which is capable of heating a work piece with high soaking properties as well as fine temperature control and which remains highly reliable over a long-term use by preventing the deformation or the like of a chuck member, and a work treating device that uses the work heating device. The work heating device is a work heating device in which the chuck member including a work attraction electrode for work attraction and a heater member including a heating element for work heating are layered, and which is capable of heating with the heater member the work piece stuck by attraction on the chuck member side, in which the heater member includes a chuck attraction electrode for causing the chuck member to stick by attraction, between a surface of the heater member that is opposed to the chuck member and the heating element, so that the chuck member and the heater member are layered detachably.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: December 18, 2018
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki Tatsumi, Megumu Kawae, Yasuyuki Temma, Toshifumi Sugawara
  • Patent number: 10005087
    Abstract: A particle collector system includes a dust collection unit, a power source unit, and a capacitance measurement unit. The dust collection unit includes first and second electrodes, a second electrode, and a dielectric body covering the electrodes. The power source unit supplies power source voltage to the first and second electrodes. The capacitance measurement unit measures the capacitance between the first and second electrodes. With this particle collector system and dust collection method using it, particles can be almost completely removed without periodic performance of a particle removal operation.
    Type: Grant
    Filed: August 2, 2014
    Date of Patent: June 26, 2018
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki Tatsumi, Yu Saito, Toshifumi Sugawara
  • Publication number: 20180147308
    Abstract: A sterilizing sheet is excellent in terms of saving space when a sterilizing operation is being performed, and sterilizing objects of various sizes. This sterilizing sheet is provided with a flexible sheet body, a sheet accommodating body and a handle. The sheet body is formed from a dielectric and a pair of electrodes accommodated inside the dielectric. The sheet accommodating body is a cylindrical body in which the sheet body is accommodated to be capable of being pulled out and rewound, and is provided with a case, a rotating body and a rewinding mechanism. The rewinding mechanism is a mechanism for automatically rewinding the sheet body, when pulled out from the sheet accommodating body, back into the sheet accommodating body. The handle is attached to a distal end portion of the sheet body, and includes, inside the handle, a battery, a switch mechanism, a booster circuit and a monitoring circuit.
    Type: Application
    Filed: May 13, 2016
    Publication date: May 31, 2018
    Applicants: Creative Technology Corporation, Matsuda Design Ltd.
    Inventors: Satomi KOYAMA, Yoshiaki TATSUMI, Li LUO, Kazuki TSUBOI, Mutsumi KUSANO, Takeshi MATSUDA, Shujiro HAYASHI
  • Patent number: 9866151
    Abstract: An electrostatic chuck that enables high speed and high quality processing of a plate to be processed, and in which the weight of a base member is reduced and the strength thereof increased so as to maintain the flatness of the base member and prevent the plate to be processed from falling; a glass substrate processing method; and said glass substrate. An electrostatic chuck (1) provided with a base member (2) and an electrostatic suction layer (3). The base member (2) is formed by a lower-surface plate (20), side-surface plates (21-24), and an upper-surface plate (25), and has a part (4) for a plurality of individual structures configured therein. The part (4) for a plurality of individual structures has a honeycomb structure that is caused by regular hexagonal tubes (40) and enables the weight of the base member (2) to be reduced and the strength thereof increased.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: January 9, 2018
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki Tatsumi, Toshifumi Sugawara
  • Patent number: 9689656
    Abstract: Provided are a workpiece holding apparatus capable of detecting lateral displacement of a workpiece (w) in a planar direction, and a method of detecting lateral displacement of a workpiece (w) with use of the workpiece holding apparatus. The workpiece holding apparatus, which is configured to hold the workpiece (w), with an adhesive pad (2) mounted on a support plate, includes: a capacitance measuring device (5) including an electrode pair formed of first and second electrodes (3a, 3b) and arranged at least at a part of a position corresponding to a peripheral edge portion of the workpiece (w), the capacitance measuring device (5) being configured to measure capacitance of the electrode pair; and a comparator circuit (6) configured to compare the measured capacitance with a predetermined reference value, to thereby detect lateral displacement of the workpiece (w) in a planar direction of the support plate (1).
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: June 27, 2017
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Toshifumi Sugawara, Eunsun Kim, Yoshiaki Tatsumi
  • Patent number: 9634582
    Abstract: Provided is a detachable generator device which can change the installation location with ease and which can effectively use a solar cell to generate electric power. The detachable generator device includes: a film-like solar cell; and attaching/detaching means for allowing the film-like solar cell to be attached to and detached from an attachment object at an installation location. The attaching/detaching means includes an adhesive film having an attaching/detaching surface which develops Van der Waals force to enable repeated affixation, or an electrostatic chuck for forming an attaching/detaching surface by turning on/off a voltage source connected to an attraction electrode sandwiched between two insulating layers to freely develop electrostatic attraction on a surface of at least one of the insulating layers.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: April 25, 2017
    Assignee: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki Tatsumi, Megumu Kawae, Hiroyuki Moriyama, Toshifumi Sugawara