Patents by Inventor William Du

William Du 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: 11953709
    Abstract: A system may include one or both of a light emitter and a light receiver. The system may include an optical filter adjacent one or both of the light emitter or the light receiver. The optical filter includes a wavelength selective scattering layer. The wavelength selective scattering layer may have a near-infrared scattering ratio of less than about 0.9. The filter may have a visible reflective haze ratio of greater than about 0.5. A method may include disposing the wavelength selective scattering layer adjacent one or both of the light emitter and the light receiver. An article may include the optical filter. The wavelength selective scattering layer may have an average near-infrared scattering of less than 60%, an average visible scattering of greater than 10%, and a difference between the % total visible reflectance and the % diffuse visible reflectance of less than 20.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: April 9, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Guanglei Du, John A. Wheatley, William B. Kolb, John C. Schultz, Daoyun Song, Luke D. Riveness
  • Publication number: 20240096165
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: November 27, 2023
    Publication date: March 21, 2024
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 11559658
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 24, 2023
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Patent number: 11160366
    Abstract: An embodiment includes a leg height adjustment mechanism that includes a first and second latch arms, a first and second retractors, and an activator. The latch arms each include an engagement structure. The retractors each include a sloped surface and a receiving structure. The receiving structure is engaged with one of the engagement structures of the first or the second latch arms. The first latch arm extends in a first lateral direction and the second latch arm extends a second lateral direction. The second retractor is separated from the first retractor in a second lateral direction that is opposite the first lateral direction. The activator includes angled lower surfaces that are positioned outwardly relative to the sloped surfaces.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: November 2, 2021
    Assignee: Lifetime Products, Inc.
    Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
  • Publication number: 20200206456
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Application
    Filed: January 14, 2020
    Publication date: July 2, 2020
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Publication number: 20200077785
    Abstract: An embodiment includes a leg height adjustment mechanism that includes a first and second latch arms, a first and second retractors, and an activator. The latch arms each include an engagement structure. The retractors each include a sloped surface and a receiving structure. The receiving structure is engaged with one of the engagement structures of the first or the second latch arms. The first latch arm extends in a first lateral direction and the second latch arm extends a second lateral direction. The second retractor is separated from the first retractor in a second lateral direction that is opposite the first lateral direction. The activator includes angled lower surfaces that are positioned outwardly relative to the sloped surfaces.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 12, 2020
    Applicant: Lifetime Products, Inc.
    Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
  • Patent number: 10576244
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 3, 2020
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Patent number: 10470561
    Abstract: An embodiment includes a leg height adjustment mechanism that includes a first and second latch arms, a first and second retractors, and an activator. The latch arms each include an engagement structure. The retractors each include a sloped surface and a receiving structure. The receiving structure is engaged with one of the engagement structures of the first or the second latch arms. The first latch arm extends in a first lateral direction and the second latch arm extends a second lateral direction. The second retractor is separated from the first retractor in a second lateral direction that is opposite the first lateral direction. The activator includes angled lower surfaces that are positioned outwardly relative to the sloped surfaces.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 12, 2019
    Assignee: Lifetime Products, Inc.
    Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
  • Publication number: 20190298054
    Abstract: An embodiment includes a leg height adjustment mechanism that includes a first and second latch arms, a first and second retractors, and an activator. The latch arms each include an engagement structure. The retractors each include a sloped surface and a receiving structure. The receiving structure is engaged with one of the engagement structures of the first or the second latch arms. The first latch arm extends in a first lateral direction and the second latch arm extends a second lateral direction. The second retractor is separated from the first retractor in a second lateral direction that is opposite the first lateral direction. The activator includes angled lower surfaces that are positioned outwardly relative to the sloped surfaces.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 3, 2019
    Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
  • Publication number: 20170354797
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Application
    Filed: June 30, 2017
    Publication date: December 14, 2017
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Patent number: 9724492
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: August 8, 2017
    Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Publication number: 20150209547
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Application
    Filed: February 3, 2015
    Publication date: July 30, 2015
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Patent number: 8979837
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: March 17, 2015
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Patent number: 8974454
    Abstract: An electrophysiology catheter for use with a steerable introducer sheath includes a flexible catheter body having a proximal end and a distal end and at least one hollow elongate tip electrode disposed at the distal end of the catheter body. The hollow elongate tip electrode includes a sidewall having at least one elongate gap that provides flexibility allowing the tip electrode to bend relative to a longitudinal axis of the catheter body. The catheter body is an independent, non-steerable structure, and can be moved via movement of the steerable introducer through which it is introduced into a patient.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 10, 2015
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang, James V. Kauphusman, Troy T. Tegg
  • Publication number: 20110288392
    Abstract: An electrophysiology catheter for use with a steerable introducer sheath includes a flexible catheter body having a proximal end and a distal end and at least one hollow elongate tip electrode disposed at the distal end of the catheter body. The hollow elongate tip electrode includes a sidewall having at least one elongate gap that provides flexibility allowing the tip electrode to bend relative to a longitudinal axis of the catheter body. The catheter body is an independent, non-steerable structure, and can be moved via movement of the steerable introducer through which it is introduced into a patient.
    Type: Application
    Filed: December 30, 2010
    Publication date: November 24, 2011
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang, James V. Kauphusman, Troy T. Tegg
  • Publication number: 20100152731
    Abstract: A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.
    Type: Application
    Filed: December 31, 2009
    Publication date: June 17, 2010
    Applicant: IRVINE BIOMEDICAL, INC.
    Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
  • Publication number: 20060269893
    Abstract: An apparatus for dispensing material during a dental or endodontic procedure includes a housing having a motor with an output. A needle heating member including a chamber may receive a prefilled needle of dispensing material. A heater at least substantially surrounds the chamber for heating the material in the needle. A plunger is used to expel the material from the needle during activation of the motor. A reusable protective sheath is provided for disposition on the outside of the housing. A method of manufacturing a needle for use and dispensing a material during a dental or endodontic procedure includes drawing a blank of metal having a closed distal end, bending the blank at a desired angle, and removing a portion of the drawn metal from the distal end to open the distal end thereby forming the dispensing needle.
    Type: Application
    Filed: August 7, 2006
    Publication date: November 30, 2006
    Applicant: ORMCO CORPORATION
    Inventors: Carlos Aloise, William Du, Steven Benson, Brenton Lively, Gary Garman
  • Publication number: 20060063126
    Abstract: An apparatus for dispensing material during a dental or endodontic procedure includes a housing having a motor with an output. A needle heating member including a chamber may receive a prefilled needle of dispensing material. A heater at least substantially surrounds the chamber for heating the material in the needle. A plunger is used to expel the material from the needle during activation of the motor. A reusable protective sheath is provided for disposition on the outside of the housing. A method of manufacturing a needle for use and dispensing a material during a dental or endodontic procedure includes drawing a blank of metal having a closed distal end, bending the blank at a desired angle, and removing a portion of the drawn metal from the distal end to open the distal end thereby forming the dispensing needle.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 23, 2006
    Inventors: Carlos Aloise, William Du, L. Buchanan, Steven Benson, Brenton Lively, Gary Garman
  • Patent number: 6319477
    Abstract: The present invention is a oxygen generating device which comprises: a container having a mouth and a neck surrounding the mouth; a tank which has an annual flange for establishing a gas tight seal between the tank and the neck; a dome assembly which is engageable with the neck and extends upwardly to define a dome chamber above the neck; and means for permitting oxygen generated in the tank to flow into the dome chamber by bubbling through a liquid contained in the dome base; the dome base having an outlet connection through which oxygen can leave the chamber and where at least part of the dome is transparent so as to render the inside thereof visible from the outside of the dome.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: November 20, 2001
    Assignee: Advent Aerobe Ltd.
    Inventor: William Du Toit
  • Patent number: 5722445
    Abstract: An improved multi-purposed cane including a handle and a stick attached to the root portion of the handle. The handle is integrally configured defining a receiving chamber extending horizontally and longitudinally. In the left half portion of the receiving chamber, an electrical components set is attached and retained thereof. The electrical components set includes a battery cell, a printed circuit board, a lamp, a push button switch, and a warning light disposed at the rear portion of the receiving chamber. The improved features is the bottom portion of the battery cell which is provided with a recess corresponding to the root portion of the handle. The root portion of the handle defines vertically an inner chamber having a clipping element thereof. The clipping element includes a biasing post, a compression spring and a cap button. The cap button is received in the recess and its top is projected into the receiving chamber.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: March 3, 1998
    Inventors: Shyu Shing Hae, William Du