Patents by Inventor Hiroaki Tokunaga

Hiroaki Tokunaga 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: 20240077297
    Abstract: An eddy current sensor assembly includes an eddy current sensor and an output signal processing circuit that processes an output signal from the eddy current sensor. The output signal processing circuit includes a mixer circuit that accepts the output signal and a signal of the predetermined frequency as input, multiplies the two signals received as input, and outputs an output signal obtained by the multiplication, and a low-pass filter that accepts the output signal output by the mixer circuit as input, cuts a high-frequency signal included in the output signal received as input, and outputs at least a direct-current (DC) signal.
    Type: Application
    Filed: November 8, 2023
    Publication date: March 7, 2024
    Inventors: Hiroto YAMADA, Taro TAKAHASHI, Hiroaki SHIBUE, Atsushi ABE, Shinpei TOKUNAGA
  • Patent number: 10046891
    Abstract: Provided are: a lid capable of capturing a foreign substance from a liquid crystal material in advance before the liquid crystal material is used; and a method of capturing a foreign substance. In a lid (20) including a bottom part (22) closing an opening on one end of a circumferential part (21) having a tubular shape is provided and a circumferential part (21) placed over a tubular part having an opening of a container provided at the container, the bottom part (22) covering the tubular part, the lid further includes a partition board (211) provided at an inner surface of the circumferential part in a slanted direction against the bottom part (22) and dividing the inside of the circumferential part (21) into a first space proximal to the bottom part (22) and a second space apart from the bottom part (22), and a connection part (213) which connects the first space with the second space being provided at a portion of the partition board (211) closest to the bottom part (22).
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 14, 2018
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventor: Hiroaki Tokunaga
  • Patent number: 10031377
    Abstract: The circumferential part of an opening of an ejection part included in a nozzle head is formed in the shape of a convex curved plane. A liquid crystal droplet adhered to the portion with the shape of a convex curved plane of the ejection part smoothly flows down along the outer surface of the ejection part and is adhered to the opening end of the opening. The liquid crystal droplet adhered to the opening end of the opening is absorbed into the liquid crystal droplet to be ejected through the opening and is dispensed downward together with the liquid crystal droplet. This suppresses a large liquid crystal pool being formed on the outer surface of the ejection part. As a result, such problems that liquid crystal to be dispensed is absorbed into a liquid crystal pool while not being dispensed downward and that a large amount of liquid crystal is unnecessarily dispensed from a liquid crystal pool are both be suppressed. In other words, liquid crystal may appropriately be dispensed.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: July 24, 2018
    Assignee: Sakai Display Products Corporation
    Inventors: Kazuyuki Yamasaki, Hiroaki Tokunaga
  • Patent number: 9772524
    Abstract: Provided are: a liquid crystal dropping device capable of accurately dropping liquid crystal material while generation of foreign substances is suppressed; and a method of manufacturing a liquid crystal display apparatus capable of manufacturing a liquid crystal display apparatus with preferable display quality and high yield in which the occurrence of a display failure such as a luminous-dot failure is suppressed. The liquid crystal dropping device 1 includes a liquid crystal bottle 2 which stores liquid crystal material 61, a three-way valve 3, a liquid crystal ejecting part 4, a nozzle 5 and a driving unit 7. The liquid crystal ejecting part 4 includes a syringe 41 with a bottomed cylindrical shape as well as a plunger 44 constituted by a slide part 42 which slides in the syringe 41 and a support 43 which has a bar-like shape and supports the slide part 42.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: September 26, 2017
    Assignee: Sakai Display Products Corporation
    Inventors: Hiroaki Tokunaga, Shinya Kasahara
  • Publication number: 20170050781
    Abstract: Provided are: a lid capable of capturing a foreign substance from a liquid crystal material in advance before the liquid crystal material is used; and a method of capturing a foreign substance. In a lid (20) including a bottom part (22) closing an opening on one end of a circumferential part (21) having a tubular shape is provided and a circumferential part (21) placed over a tubular part having an opening of a container provided at the container, the bottom part (22) covering the tubular part, the lid further includes a partition board (211) provided at an inner surface of the circumferential part in a slanted direction against the bottom part (22) and dividing the inside of the circumferential part (21) into a first space proximal to the bottom part (22) and a second space apart from the bottom part (22), and a connection part (213) which connects the first space with the second space being provided at a portion of the partition board (211) closest to the bottom part (22).
    Type: Application
    Filed: February 20, 2014
    Publication date: February 23, 2017
    Inventor: Hiroaki Tokunaga
  • Publication number: 20170025769
    Abstract: Provided is a terminal to be connected to a partially stripped portion, the partially stripped portion being obtained by stripping an insulating coating at a position located a predetermined distance away from a terminal end of an electrical wire such that a portion in a circumferential direction of the insulating coating remains, partially exposing a core wire, an electrical wire connection portion including one crimped portion in which left and right barrels protrude in both sides of a width direction from a central portion of a base plate, in which rectangular frame-shaped ribs that protrude inwardly along an outer circumferential edge of the crimped portion are provided, a core wire contact portion that protrudes inward as a step is provided in a portion surrounded by the ribs and has a size corresponding to a size of the partially stripped portion of the electrical wire.
    Type: Application
    Filed: November 27, 2014
    Publication date: January 26, 2017
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hiroaki TOKUNAGA, Naofumi YAMATAKE
  • Publication number: 20160334655
    Abstract: Provided are: a liquid crystal dropping device capable of accurately dropping liquid crystal material while generation of foreign substances is suppressed; and a method of manufacturing a liquid crystal display apparatus capable of manufacturing a liquid crystal display apparatus with preferable display quality and high yield in which the occurrence of a display failure such as a luminous-dot failure is suppressed. The liquid crystal dropping device 1 includes a liquid crystal bottle 2 which stores liquid crystal material 61, a three-way valve 3, a liquid crystal ejecting part 4, a nozzle 5 and a driving unit 7. The liquid crystal ejecting part 4 includes a syringe 41 with a bottomed cylindrical shape as well as a plunger 44 constituted by a slide part 42 which slides in the syringe 41 and a support 43 which has a bar-like shape and supports the slide part 42.
    Type: Application
    Filed: January 23, 2014
    Publication date: November 17, 2016
    Applicant: Sakai Display Products Corporation
    Inventors: Hiroaki Tokunaga, Shinya Kasahara
  • Publication number: 20160103347
    Abstract: The circumferential part of an opening of an ejection part included in a nozzle head is formed in the shape of a convex curved plane. A liquid crystal droplet adhered to the portion with the shape of a convex curved plane of the ejection part smoothly flows down along the outer surface of the ejection part and is adhered to the opening end of the opening. The liquid crystal droplet adhered to the opening end of the opening is absorbed into the liquid crystal droplet to be ejected through the opening and is dispensed downward together with the liquid crystal droplet. This suppresses a large liquid crystal pool being formed on the outer surface of the ejection part. As a result, such problems that liquid crystal to be dispensed is absorbed into a liquid crystal pool while not being dispensed downward and that a large amount of liquid crystal is unnecessarily dispensed from a liquid crystal pool are both be suppressed. In other words, liquid crystal may appropriately be dispensed.
    Type: Application
    Filed: June 10, 2014
    Publication date: April 14, 2016
    Inventors: Kazuyuki Yamasaki, Hiroaki Tokunaga
  • Patent number: 8847073
    Abstract: A protector that accommodates convoluted conduits having different diameters includes a main body and a lid that covers an upper surface opening of the main body. A convoluted conduit engagement portion having ribs that fit troughs of a large-diameter convoluted conduit extends from a bottom wall on one end side in the length direction of the main body to internal surfaces of two side walls. A large-diameter convoluted conduit engagement portion having ribs that fit the troughs of the large-diameter convoluted conduit is provided on an internal surface on one end side in the length direction of the lid, and a small-diameter convoluted conduit engagement portion having ribs that fit troughs of a small-diameter convoluted conduit is provided on an internal surface of the other end side. The lid is rotated by 180 degrees to correspond to an outer diameter of a convoluted conduit and connected to the main body.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: September 30, 2014
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Hiroaki Tokunaga, Takuya Ooba
  • Publication number: 20120298404
    Abstract: A protector that accommodates convoluted conduits having different diameters includes a main body and a lid that covers an upper surface opening of the main body. A convoluted conduit engagement portion having ribs that fit troughs of a large-diameter convoluted conduit extends from a bottom wall on one end side in the length direction of the main body to internal surfaces of two side walls. A large-diameter convoluted conduit engagement portion having ribs that fit the troughs of the large-diameter convoluted conduit is provided on an internal surface on one end side in the length direction of the lid, and a small-diameter convoluted conduit engagement portion having ribs that fit troughs of a small-diameter convoluted conduit is provided on an internal surface of the other end side. The lid is rotated by 180 degrees to correspond to an outer diameter of a convoluted conduit and connected to the main body.
    Type: Application
    Filed: June 15, 2011
    Publication date: November 29, 2012
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hiroaki Tokunaga, Takuya Ooba