Patents by Inventor Masahiro SEO

Masahiro SEO 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: 20240164124
    Abstract: Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.
    Type: Application
    Filed: September 25, 2023
    Publication date: May 16, 2024
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Satoko SHITAGAKI, Satoshi SEO, Nobuharu OHSAWA, Hideko INOUE, Masahiro TAKAHASHI, Kunihiko SUZUKI
  • Publication number: 20240105543
    Abstract: There is provided a power conversion apparatus including a first power semiconductor module, a second power semiconductor module, a control circuit for driving the first power semiconductor module and the second power semiconductor module, and liquid-cooling type cooling jackets, wherein the second power semiconductor module is disposed closer to an upper surface in the gravity direction than the first power semiconductor module is, the cooling jackets include a refrigerant containing hydrogen molecules and a refrigerant flow path at least between the first power semiconductor module and the second power semiconductor module, and the control circuit performs control such that the operating time period of the second power semiconductor module is shorter than the operating time period of the first power semiconductor module.
    Type: Application
    Filed: August 3, 2023
    Publication date: March 28, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Hiroshi Kamizuma, Hangxian Gao, Tetsuya Kawashima, Masahiro Seo
  • Patent number: 10511249
    Abstract: A motor driving device controls driving of an inverter device, detects current values in two phases, and compensates a value. The motor driving device detects current values in two phases, namely, a maximum phase current value and a minimum phase current value, within a single cycle of a PWM carrier frequency. The motor driving device compensates a value obtained by subtracting an absolute value of a difference between two absolute values, namely, the detected maximum phase current value and minimum phase current value, from the smaller value of the absolute values, as the offset current component.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: December 17, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Masahiro Seo, Toshiyuki Ajima, Shigehisa Aoyagi, Takafumi Hara, Masaki Kashima, Yawara Kato
  • Publication number: 20190013761
    Abstract: An object of the present invention is to provide an inverter driving device and an electric system which are capable of accurately detecting an offset amount of a current detection circuit that detects a motor current using a direct bus current, and compensating for the detected offset amount, to improve detection accuracy of the motor current and control the motor appropriately, without increasing the number of components of the inverter driving device.
    Type: Application
    Filed: July 29, 2016
    Publication date: January 10, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Masahiro SEO, Toshiyuki AJIMA, Shigehisa AOYAGI, Takafumi HARA, Masaki KASHIMA, Yawara KATO
  • Patent number: 9919532
    Abstract: An inkjet head cleaning apparatus 1 that moves an inkjet head 10 from a printing position P1 to a cleaning position P2 to perform cleaning, the inkjet head cleaning apparatus 1 comprising a conveying means 20 for conveying the inkjet head 10 between the printing position P1 and the cleaning position P2 and a cleaning means 30 for cleaning a discharge surface 12 of the inkjet head 10 conveyed to the cleaning position P1, wherein the conveying means 20 changes the orientation of the inkjet head 10 such that the orientation of the discharge surface 12 of the inkjet head 10 is different in the printing position P1 and in the cleaning position P2.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: March 20, 2018
    Assignee: QUALICAPS CO., LTD.
    Inventors: Masahiro Seo, Yoshihisa Konishi, Tetsuhisa Ishida, Motohiro Yagyu
  • Patent number: 9710901
    Abstract: Disclosed is an edible object marking apparatus (1) wherein a carrier means (20) successively conveys an edible object to a detecting means (210), a marking means (220), and a marking inspecting means (230) while holding the edible object, wherein the detecting means (210) captures an image of the edible object to acquire orientational data indicating the orientation of the edible object, the marking means (220) forms a pre-set marking pattern in accordance with the orientation of the edible object based on the orientational data, and the marking inspecting means (230) captures an image of the edible object, extracts marking pattern data, compares the marking pattern data with pre-set reference pattern data based on the orientational data acquired by the detecting means (210) to thereby inspect marking accuracy. This edible object marking apparatus makes it possible to promptly and easily obtain edible objects provided with an accurate marking.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: July 18, 2017
    Assignee: QUALICAPS CO., LTD.
    Inventors: Masahiro Seo, Hiroshi Sakuramoto, Katsuaki Shimaoka, Yuta Igarashi, Tetsuhisa Ishida, Motohiro Yagyu
  • Patent number: 9649864
    Abstract: An inkjet marking apparatus 1, wherein a printing means 220 comprises a printhead 222 provided with a plurality of nozzles 224 in a direction intersecting the conveying direction of printing substrates P, the printhead 222 is supported so as to be movable in a direction in which the nozzles 224 are arranged, and a control means, at a time of nozzle change when the nozzles 224 to be used are changed, suspends the operation of a feeding means 10 to form a non-holding area on a carrier means 20 where the printing substrates P are not held in a holding part 22 and, after the printing substrates P are printed, moves the printhead 222 during a time when the non-holding area passes through a printing area A.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: May 16, 2017
    Assignee: QUALICAPS CO., LTD.
    Inventors: Masahiro Seo, Hiroshi Sakuramoto, Yoshihisa Konishi, Tetsuhisa Ishida, Motohiro Yagyu
  • Publication number: 20170096020
    Abstract: An inkjet marking apparatus 1, wherein a printing means 220 comprises a printhead 222 provided with a plurality of nozzles 224 in a direction intersecting the conveying direction of printing substrates P, the printhead 222 is supported so as to be movable in a direction in which the nozzles 224 are arranged, and a control means, at a time of nozzle change when the nozzles 224 to be used are changed, suspends the operation of a feeding means 10 to form a non-holding area on a carrier means 20 where the printing substrates P are not held in a holding part 22 and, after the printing substrates P are printed, moves the printhead 222 during a time when the non-holding area passes through a printing area A.
    Type: Application
    Filed: March 2, 2015
    Publication date: April 6, 2017
    Inventors: Masahiro SEO, Hiroshi SAKURAMOTO, Yoshihisa KONISHI, Tetsuhisa ISHIDA, Motohiro YAGYU
  • Publication number: 20170021630
    Abstract: An inkjet head cleaning apparatus 1 that moves an inkjet head 10 from a printing position P1 to a cleaning position P2 to perform cleaning, the inkjet head cleaning apparatus 1 comprising a conveying means 20 for conveying the inkjet head 10 between the printing position P1 and the cleaning position P2 and a cleaning means 30 for cleaning a discharge surface 12 of the inkjet head 10 conveyed to the cleaning position P1, wherein the conveying means 20 changes the orientation of the inkjet head 10 such that the orientation of the discharge surface 12 of the inkjet head 10 is different in the printing position P1 and in the cleaning position P2.
    Type: Application
    Filed: March 2, 2015
    Publication date: January 26, 2017
    Inventors: Masahiro SEO, Yoshihisa KONISHI, Tetsuhisa ISHIDA, Motohiro YAGYU
  • Publication number: 20160180515
    Abstract: Disclosed is an edible object marking apparatus (1) wherein a carrier means (20) successively conveys an edible object to a detecting means (210), a marking means (220), and a marking inspecting means (230) while holding the edible object, wherein the detecting means (210) captures an image of the edible object to acquire orientational data indicating the orientation of the edible object, the marking means (220) forms a pre-set marking pattern in accordance with the orientation of the edible object based on the orientational data, and the marking inspecting means (230) captures an image of the edible object, extracts marking pattern data, compares the marking pattern data with pre-set reference pattern data based on the orientational data acquired by the detecting means (210) to thereby inspect marking accuracy. This edible object marking apparatus makes it possible to promptly and easily obtain edible objects provided with an accurate marking.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 23, 2016
    Inventors: Masahiro SEO, Hiroshi SAKURAMOTO, Katsuaki SHIMAOKA, Yuta IGARASHI, Tetsuhisa ISHIDA, Motohiro YAGYU
  • Publication number: 20130169883
    Abstract: AV equipment enables individual initial setting for each user utilizing near field communication without requiring any cumbersome operation. A determiner determines whether or not identification information of a portable device obtained by a near field communicator is identical to registered identification information to detect the registered portable device, which is located close to the AV equipment. A setter reads initial setting detail corresponding to the portable device detected by the determiner from the memory, and sets the read initial setting detail to the AV equipment. In searching the portable device, an output power controller initially sets the output power to an initial value, and gradually increases the output power while the registered portable device is not detected.
    Type: Application
    Filed: August 23, 2012
    Publication date: July 4, 2013
    Applicant: Panasonic Corporation
    Inventor: Masahiro SEO