Patents by Inventor Adrian Lo

Adrian Lo 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: 11402412
    Abstract: Disclosed herein is a current sensor that includes a bus bar and a magnetic sensor. The bus bar includes first and second cylindrical structure parts which are coaxially arranged, and a sensing part disposed in a hollow area surrounded by the first and second cylindrical structure parts. The magnetic sensor is disposed in the hollow area. The bus bar is configured to branch current to be measured into the first cylindrical structure part and sensing part and to make at least part of a current component of the current to be measured that flows in the first cylindrical structure part in one direction flow in the second cylindrical structure part in an opposite direction to the one direction.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: August 2, 2022
    Assignee: TDK CORPORATION
    Inventors: Adrian Lo, Masafumi Kami, Jun Hirabayashi
  • Publication number: 20220178972
    Abstract: A current sensor includes a bus bar in which current to be measured flows and a magnetic sensor for detecting a magnetic field generated by the current flowing in the bus bar. The bus bar includes a bypass bus bar having a cylindrical structure and a sensing bus bar disposed in a hollow area surrounded by the bypass bus bar. The magnetic sensor is disposed in the hollow area. An area having a zero magnetic field is formed in the hollow area of the bypass bus bar. Thus, by disposing the sensing bus bar in the zero magnetic field area, it is possible to accurately measure the amount of current flowing in the bus bar while preventing saturation of the magnetic sensor even when the current flowing in the bus bar is large.
    Type: Application
    Filed: March 11, 2020
    Publication date: June 9, 2022
    Inventors: Adrian LO, Isao MATSUMOTO, Tatsumaro HORI, Takahiro HAMAMURA, Takashi OSADA, Masafumi KAMI
  • Publication number: 20210172982
    Abstract: Disclosed herein is a current sensor that includes a bus bar and a magnetic sensor. The bus bar includes first and second cylindrical structure parts which are coaxially arranged, and a sensing part disposed in a hollow area surrounded by the first and second cylindrical structure parts. The magnetic sensor is disposed in the hollow area. The bus bar is configured to branch current to be measured into the first cylindrical structure part and sensing part and to make at least part of a current component of the current to be measured that flows in the first cylindrical structure part in one direction flow in the second cylindrical structure part in an opposite direction to the one direction.
    Type: Application
    Filed: October 8, 2020
    Publication date: June 10, 2021
    Inventors: Adrian LO, Masafumi KAMI, Jun HIRABAYASHI
  • Patent number: 10884077
    Abstract: Disclosed herein is an inductance element for a magnetic sensor. The inductance element includes a first core comprising a first soft magnetic material and having first and second connecting surfaces, a second core comprising a second soft magnetic material different from the first soft magnetic material and having third and fourth connecting surfaces facing the first and second connecting surfaces, respectively, and a coil wound around the first core between the first and second connecting surfaces, wherein the first core is larger in magnetic field strength at which magnetic saturation occurs than the second core, and wherein the second core is higher in permeability than the first core and has at least partially a meander shape.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: January 5, 2021
    Assignee: TDK CORPORATION
    Inventors: Takahiro Hamamura, Takashi Osada, Masafumi Kami, Adrian Lo
  • Publication number: 20180106874
    Abstract: Disclosed herein is an inductance element for a magnetic sensor. The inductance element includes a first core comprising a first soft magnetic material and having first and second connecting surfaces, a second core comprising a second soft magnetic material different from the first soft magnetic material and having third and fourth connecting surfaces facing the first and second connecting surfaces, respectively, and a coil wound around the first core between the first and second connecting surfaces, wherein the first core is larger in magnetic field strength at which magnetic saturation occurs than the second core, and wherein the second core is higher in permeability than the first core and has at least partially a meander shape.
    Type: Application
    Filed: October 5, 2017
    Publication date: April 19, 2018
    Applicant: TDK Corporation
    Inventors: Takahiro HAMAMURA, Takashi OSADA, Masafumi KAMI, Adrian LO
  • Patent number: 9767952
    Abstract: Disclosed herein is a magnetic sensor including: a first core made of a first soft magnetic material, the first core having first and second connection surfaces; a second core made of a second soft magnetic material different from the first soft magnetic material, the second core having a third connection surface facing the first connection surface and a fourth connection surface facing the second connection surface; and a coil wound around the first core between the first connection surface and the second connection surface. The first core reaches magnetic saturation at a higher magnetic field intensity than that of the second core, and the second core has a higher magnetic permeability than that of the first core.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: September 19, 2017
    Assignee: TDK CORPORATION
    Inventors: Takahiro Hamamura, Takashi Osada, Masafumi Kami, Adrian Lo
  • Publication number: 20170125151
    Abstract: Disclosed herein is a magnetic sensor including: a first core made of a first soft magnetic material, the first core having first and second connection surfaces; a second core made of a second soft magnetic material different from the first soft magnetic material, the second core having a third connection surface facing the first connection surface and a fourth connection surface facing the second connection surface; and a coil wound around the first core between the first connection surface and the second connection surface. The first core reaches magnetic saturation at a higher magnetic field intensity than that of the second core, and the second core has a higher magnetic permeability than that of the first core.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Applicant: TDK Corporation
    Inventors: Takahiro HAMAMURA, Takashi OSADA, Masafumi KAMI, Adrian LO
  • Patent number: 7403716
    Abstract: The optical module includes a main housing, a filter support component, which can affix an optical fiber, supported by a first attachment section, a light-emitting component supported by a second attachment section, a light-receiving component supported by a third attachment section, and first and second optical filters supported by a filter support component. The filter support component has a first surface and a second surface. The first optical filter is mounted on the first surface of the filter support component. The second optical filter is mounted on the second surface of the filter support component.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: July 22, 2008
    Assignee: TDK Corporation
    Inventors: Adrian Lo, Makoto Sekijima, Kenjiro Hata, Tohru Kineri, Naoki Hanashima
  • Publication number: 20060239621
    Abstract: The present invention relates to an optical module which can be produced by an easy process and at low cost and a method for fabricating the optical module. An optical module 100 includes a die pad 101, a plurality of leads 102, and a first platform 110 and a second platform 120 disposed on the die pad 101. At least an optical fiber 113 is fixed to a first platform body 111 and at least a light emitter 124 adapted for generating optical signals to be transmitted through the optical fiber 113 is mounted on a second platform body 121.
    Type: Application
    Filed: November 4, 2003
    Publication date: October 26, 2006
    Inventors: Adrian Lo, Kenjiro Hata, Tohru Kineri, Naoki Hanashima
  • Patent number: 7125174
    Abstract: The optical module includes a main housing, a light-emitting component supported by a second attachment section, a light-receiving component and a filter support member supported by a third attachment section, and first and second optical filters supported by the filter support member. The filter support member has a first surface and a second surface. The first optical filter is mounted on the first surface of the filter support member. The second optical filter is mounted on the second surface of the filter support member.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: October 24, 2006
    Assignee: TDK Corporation
    Inventors: Adrian Lo, Makoto Sekijima, Kenjiro Hata, Tohru Kineri, Naoki Hanashima
  • Patent number: 7048451
    Abstract: The optical module includes a main housing to which the optical fiber can be attached and a light-emitting component and a light-receiving component attached to the main housing. At least a part of a surface of the main housing has an irregular pattern to enhance a thermal dissipation. Because at least part of the main housing comprises a heat sink, so the optical module itself has a very high heat dissipation property, eliminating the type of problems that arise when adhesive or the like is used to attach to the main housing heat sinks constituted as separate parts, such as the increase in the number of parts and the degradation in thermal conductivity to the heat sink caused by the adhesive.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: May 23, 2006
    Assignee: TDK Corporation
    Inventors: Adrian Lo, Makoto Sekijma, Kenjiro Hata, Tohru Kineri, Naoki Hanashima
  • Publication number: 20050185899
    Abstract: The optical module includes a main housing to which the optical fiber can be attached and a light-emitting component and a light-receiving component attached to the main housing. At least a part of a surface of the main housing has an irregular pattern to enhance a thermal dissipation. Because at least part of the main housing comprises a heat sink, so the optical module itself has a very high heat dissipation property, eliminating the type of problems that arise when adhesive or the like is used to attach to the main housing heat sinks constituted as separate parts, such as the increase in the number of parts and the degradation in thermal conductivity to the heat sink caused by the adhesive.
    Type: Application
    Filed: July 7, 2004
    Publication date: August 25, 2005
    Inventors: Adrian Lo, Makoto Sekijima, Kenjiro Hata, Tohru Kineri, Naoki Hanashima
  • Publication number: 20050157988
    Abstract: The optical module includes a main housing, a light-emitting component supported by a second attachment section, a light-receiving component and a filter support member supported by a third attachment section, and first and second optical filters supported by the filter support member. The filter support member has a first surface and a second surface. The first optical filter is mounted on the first surface of the filter support member. The second optical filter is mounted on the second surface of the filter support member.
    Type: Application
    Filed: July 7, 2004
    Publication date: July 21, 2005
    Inventors: Adrian Lo, Makoto Sekijima, Kenjiro Hata, Tohru Kineri, Naoki Hanashima
  • Publication number: 20050158054
    Abstract: The optical module includes a main housing, a filter support component, which can affix an optical fiber, supported by a first attachment section, a light-emitting component supported by a second attachment section, a light-receiving component supported by a third attachment section, and first and second optical filters supported by a filter support component. The filter support component has a first surface and a second surface. The first optical filter is mounted on the first surface of the filter support component. The second optical filter is mounted on the second surface of the filter support component.
    Type: Application
    Filed: July 7, 2004
    Publication date: July 21, 2005
    Inventors: Adrian Lo, Makoto Sekijima, Kenjiro Hata, Tohru Kineri, Naoki Hanashima