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).
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Patent number: 11559658Abstract: 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: GrantFiled: January 14, 2020Date of Patent: January 24, 2023Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Patent number: 11160366Abstract: 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: GrantFiled: November 11, 2019Date of Patent: November 2, 2021Assignee: Lifetime Products, Inc.Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
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Publication number: 20200206456Abstract: 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: ApplicationFiled: January 14, 2020Publication date: July 2, 2020Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Publication number: 20200077785Abstract: 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: ApplicationFiled: November 11, 2019Publication date: March 12, 2020Applicant: Lifetime Products, Inc.Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
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Patent number: 10576244Abstract: 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: GrantFiled: June 30, 2017Date of Patent: March 3, 2020Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Patent number: 10470561Abstract: 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: GrantFiled: March 30, 2018Date of Patent: November 12, 2019Assignee: Lifetime Products, Inc.Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
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Publication number: 20190298054Abstract: 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: ApplicationFiled: March 30, 2018Publication date: October 3, 2019Inventors: Frank Clegg, Baik Kwang Ho, Leo Cai, William Du
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Publication number: 20170354797Abstract: 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: ApplicationFiled: June 30, 2017Publication date: December 14, 2017Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Patent number: 9724492Abstract: 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: GrantFiled: February 3, 2015Date of Patent: August 8, 2017Assignee: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Publication number: 20150209547Abstract: 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: ApplicationFiled: February 3, 2015Publication date: July 30, 2015Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Patent number: 8979837Abstract: 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: GrantFiled: December 31, 2009Date of Patent: March 17, 2015Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Patent number: 8974454Abstract: 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: GrantFiled: December 30, 2010Date of Patent: March 10, 2015Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang, James V. Kauphusman, Troy T. Tegg
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Publication number: 20110288392Abstract: 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: ApplicationFiled: December 30, 2010Publication date: November 24, 2011Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang, James V. Kauphusman, Troy T. Tegg
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Publication number: 20100152731Abstract: 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: ApplicationFiled: December 31, 2009Publication date: June 17, 2010Applicant: IRVINE BIOMEDICAL, INC.Inventors: Alan de la Rama, Cary Hata, William Du, Yongxing Zhang
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Publication number: 20060269893Abstract: 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: ApplicationFiled: August 7, 2006Publication date: November 30, 2006Applicant: ORMCO CORPORATIONInventors: Carlos Aloise, William Du, Steven Benson, Brenton Lively, Gary Garman
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Publication number: 20060063126Abstract: 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: ApplicationFiled: September 16, 2005Publication date: March 23, 2006Inventors: Carlos Aloise, William Du, L. Buchanan, Steven Benson, Brenton Lively, Gary Garman
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Patent number: 6319477Abstract: 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: GrantFiled: January 29, 1999Date of Patent: November 20, 2001Assignee: Advent Aerobe Ltd.Inventor: William Du Toit
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Patent number: 5722445Abstract: 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: GrantFiled: April 2, 1997Date of Patent: March 3, 1998Inventors: Shyu Shing Hae, William Du
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Patent number: 5582196Abstract: A multipurpose cane which includes a hollow handle, and a retractable walking-stick fixedly secured to the hollow handle fixe, wherein the hollow handle defines a storage chamber for keeping personal accessories, and holds a lamp and battery assembly controlled by a switch to produce light for illumination and/or warning.Type: GrantFiled: May 2, 1996Date of Patent: December 10, 1996Inventors: Shyu S. Hae, William Du
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Patent number: 4412841Abstract: Compacted carbonaceous shapes are produced by mixing a particulate carbonaceous material with a binder, forming green shapes from the mixture, and heating the green shapes by induction heating or microwave heating or a combination thereof. The process is particularly adapted for making formcoke.Type: GrantFiled: June 29, 1981Date of Patent: November 1, 1983Assignee: Inland Steel CompanyInventors: William Du Broff, George H. Craig, Timothy A. Veslocki