Patents by Inventor Andrew S. Lee

Andrew S. Lee 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: 12043853
    Abstract: The present invention provides methods and compositions comprising at least one neutral metalloprotease enzyme that has improved storage stability. In some embodiments, the neutral metalloprotease finds use in cleaning and other applications. In some particularly preferred embodiments, the present invention provides methods and compositions comprising neutral metalloprotease(s) obtained from Bacillus sp. In some more particularly preferred embodiments, the neutral metalloprotease is obtained from B. amyloliquefaciens. In still further preferred embodiments, the neutral metalloprotease is a variant of the B. amyloliquefaciens neutral metalloprotease. In yet additional embodiments, the neutral metalloprotease is a homolog of the the B. amyloliquefaciens neutral metalloprotease. The present invention finds particular use in applications including, but not limited to cleaning, bleaching and disinfecting.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: July 23, 2024
    Assignee: DANISCO US INC.
    Inventors: Andrew Shaw, David A Estell, Eugene S Sadlowski, Hiroshi Oh, Louise Wallace, Ronaldus Wilhelmus Joannes Hommes, Sang-Kyu Lee
  • Publication number: 20240197333
    Abstract: A vaso-occlusive device comprising an elongate main portion (such as a braided portion) having a plurality of openings along a length of the main portion (such as the openings between the strands of a braid). The main portion has a first bending stiffness. An atraumatic distal segment coupled to, and extending distally from, the distal end of the braided portion. The distal segment has a second bending stiffness. The ratio of the second bending stiffness to the first bending stiffness is within a specified range, which alleviates the problem of the distal segment entering and engaging the openings of the main portion while maintaining deployment performance of the device.
    Type: Application
    Filed: February 29, 2024
    Publication date: June 20, 2024
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Hancun Chen, Andrew S. Lee, Jinhoon Park
  • Publication number: 20240058510
    Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.
    Type: Application
    Filed: October 31, 2023
    Publication date: February 22, 2024
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Hancun Chen, Andrew S. Lee
  • Publication number: 20240032938
    Abstract: A flat embolic braid having a first side comprising a first side surface, and a second side comprising a second side surface facing in an opposite direction than the first side surface, the braid having an elongated constrained configuration for being deployed through a delivery catheter, and a three-dimensional unconstrained configuration, wherein in the three-dimensional unconstrained configuration, the braid assumes a plurality of successive loops in which the braid is at least partially twisted between successive loops of the plurality, so that the first side surface faces externally of each loop, and the second side surface faces an interior of each loop, respectively, regardless of a change in direction and/or orientation of the braid.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 1, 2024
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Stephen Porter, Andrew S. Lee
  • Patent number: 11819217
    Abstract: A flat embolic braid having a first side comprising a first side surface, and a second side comprising a second side surface facing in an opposite direction than the first side surface, the braid having an elongated constrained configuration for being deployed through a delivery catheter, and a three-dimensional unconstrained configuration, wherein in the three-dimensional unconstrained configuration, the braid assumes a plurality of successive loops in which the braid is at least partially twisted between successive loops of the plurality, so that the first side surface faces externally of each loop, and the second side surface faces an interior of each loop, respectively, regardless of a change in direction and/or orientation of the braid.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: November 21, 2023
    Assignees: Stryker Corporation, Stryker European Operations Limited
    Inventors: Stephen Porter, Andrew S. Lee
  • Publication number: 20230277733
    Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.
    Type: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
  • Publication number: 20230201428
    Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.
    Type: Application
    Filed: February 28, 2023
    Publication date: June 29, 2023
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
  • Patent number: 11612678
    Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: March 28, 2023
    Assignees: Stryker Corporation, Stryker European Operations Limited
    Inventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
  • Publication number: 20230072224
    Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.
    Type: Application
    Filed: November 9, 2022
    Publication date: March 9, 2023
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell
  • Patent number: 11524328
    Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: December 13, 2022
    Assignee: Stryker Corporation
    Inventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell
  • Publication number: 20220370078
    Abstract: A vaso-occlusive device, includes: a vaso-occlusive structure configured for implantation in an aneurysm sac, the vaso-occlusive structure having a delivery configuration when restrained within a delivery catheter and having a deployed configuration when released from the delivery catheter into the aneurysmal sac, at least a portion of the vaso-occlusive structure being composed of a AuPtW (gold-platinum-tungsten) alloy; wherein the AuPtW alloy comprises platinum within a range between 25% and 40% by weight, and wherein the AuPtW alloy comprises tungsten within a range between 0.01% and 10% by weight.
    Type: Application
    Filed: June 22, 2022
    Publication date: November 24, 2022
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Hancun Chen, Andrew S. Lee
  • Patent number: 11484629
    Abstract: Implantable medical devices, such as embolic devices and blood flow filters are disclosed, the devices being made at least partially out of a platinum-tungsten alloy, wherein a percentage of tungsten in the alloy is equal to or greater than about 10% of the alloy by weight.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: November 1, 2022
    Assignee: Stryker Corporation
    Inventors: Hancun Chen, Andrew S. Lee
  • Publication number: 20210137526
    Abstract: An embolic device for placement in a body lumen, includes: a first segment having a first linear configuration when located inside a catheter, the first segment being configured to form a first three-dimensional structure when outside the catheter, wherein the first three-dimensional structure defines a cavity; and a second segment extending from the first segment, the second segment having a second linear configuration when located inside the catheter, the second segment being configured to form a second three-dimensional structure when outside the catheter; wherein the cavity of the first three-dimensional structure is configured to accommodate at least a majority of the second three-dimensional structure.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 13, 2021
    Inventors: Andrew S. Lee, Clifford Teoh, Hancun Chen, Jinhoon Park
  • Publication number: 20210069387
    Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.
    Type: Application
    Filed: May 11, 2020
    Publication date: March 11, 2021
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
  • Publication number: 20210069386
    Abstract: Implantable medical devices, such as embolic devices and blood flow filters are disclosed, the devices being made at least partially out of a platinum-tungsten alloy, wherein a percentage of tungsten in the alloy is equal to or greater than about 10% of the alloy by weight.
    Type: Application
    Filed: September 11, 2019
    Publication date: March 11, 2021
    Inventors: Hancun Chen, Andrew S. Lee
  • Patent number: 10893870
    Abstract: A vaso-occlusive device includes an inner braided member having an unconstrained deployed configuration and a constrained delivery configuration. The inner braided member includes a first plurality of filaments made of a first material composition, where a pair of filaments of the first plurality defines a first braid angle when the inner braided member is in the deployed configuration. The device also includes an outer braided member disposed at least partially around the inner braided member, and having an unconstrained deployed configuration and a constrained delivery configuration. The outer braided member includes a second plurality of filaments made of a second material composition different from the first material, where the first material has a greater radiopacity than the second material. A pair of filaments of the second plurality defines a second braid angle, substantially equal to the first braid angle, when the outer braided member is in the deployed configuration.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: January 19, 2021
    Assignee: Stryker Corporation
    Inventors: Jiaxu Wang, Andrew S. Lee
  • Publication number: 20200367901
    Abstract: A flat embolic braid having a first side comprising a first side surface, and a second side comprising a second side surface facing in an opposite direction than the first side surface, the braid having an elongated constrained configuration for being deployed through a delivery catheter, and a three-dimensional unconstrained configuration, wherein in the three-dimensional unconstrained configuration, the braid assumes a plurality of successive loops in which the braid is at least partially twisted between successive loops of the plurality, so that the first side surface faces externally of each loop, and the second side surface faces an interior of each loop, respectively, regardless of a change in direction and/or orientation of the braid.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Stephen Porter, Andrew S. Lee
  • Publication number: 20200215599
    Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 9, 2020
    Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITED
    Inventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell
  • Publication number: 20200170647
    Abstract: A vaso-occlusive device comprises an elongate vaso-occlusive structure configured for implantation in an aneurysm sac. The vaso-occlusive structure has a delivery configuration when restrained within a delivery catheter and has a deployed configuration when released from the delivery catheter into the aneurysmal sac. At least a portion of the vaso-occlusive device is composed of a gold-platinum (AuPt) alloy.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 4, 2020
    Inventors: Hancun CHEN, Andrew S. LEE
  • Publication number: 20190336138
    Abstract: A vaso-occlusive device includes an inner braided member having an unconstrained deployed configuration and a constrained delivery configuration. The inner braided member includes a first plurality of filaments made of a first material composition, where a pair of filaments of the first plurality defines a first braid angle when the inner braided member is in the deployed configuration. The device also includes an outer braided member disposed at least partially around the inner braided member, and having an unconstrained deployed configuration and a constrained delivery configuration. The outer braided member includes a second plurality of filaments made of a second material composition different from the first material, where the first material has a greater radiopacity than the second material. A pair of filaments of the second plurality defines a second braid angle, substantially equal to the first braid angle, when the outer braided member is in the deployed configuration.
    Type: Application
    Filed: May 3, 2018
    Publication date: November 7, 2019
    Inventors: Jiaxu Wang, Andrew S. Lee