Patents by Inventor T. Chang

T. Chang 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: 20240156600
    Abstract: A method and device for placing an epicardial anchor in a heart are described. An anchor placement device includes a tube, a needle formed on a distal end of the tube, an inflatable balloon in proximity to the distal end of the tube, and a control plate located proximally from the inflatable balloon. The anchor placement device is configured to pierce from an endocardium layer of the heart through an epicardium layer of the heart and then inflate the balloon to form an anchor located outside the epicardium layer. Meanwhile, the control plate is configured to abut against the endocardium layer and reduce movement of the tube while the balloon is inflated.
    Type: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Inventors: Jason Scott Provol, Arvin T. Chang
  • Patent number: 11985784
    Abstract: A server information handling system is secured by a bezel that couples to an access location, such as an air vent at a front or rear face of a housing. The bezel includes a security structure having a lock and configured to couple directly at the front face or with a bezel extension at the rear face so that the server information handling system can use the same bezel with both a front face or rear face rack mount. The bezel has a lock integrated with the security structure, an air filter that fits over the security structure to filter air flowing into the housing, and a filter brace that captures the air filter by coupling to the security structure over the air filter. The filter brace attaches and detaches at the security structure when the security structure locks a server information handling system housing so that the air filter can be changed while the housing remains secure.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: May 14, 2024
    Assignee: Dell Products L.P.
    Inventors: Peter T. Clark, Amrita Sidhu Maguire, Richard W. Guzman, Sean P. O'Donnell, Matthew B. Gilbert, Georg Todtenbier, Oscar Coutinho, Yung-Chun Chen, Ming-Chiao Lee, Chi-Sung Chang
  • Patent number: 11980037
    Abstract: Described herein are ferroelectric (FE) memory cells that include transistors having gate stacks separate from FE capacitors of these cells. An example memory cell may be implemented as an IC device that includes a support structure (e.g., a substrate) and a transistor provided over the support structure and including a gate stack. The IC device also includes a FE capacitor having a first capacitor electrode, a second capacitor electrode, and a capacitor insulator of a FE material between the first capacitor electrode and the second capacitor electrode, where the FE capacitor is separate from the gate stack (i.e., is not integrated within the gate stack and does not have any layers that are part of the gate stack). The IC device further includes an interconnect structure, configured to electrically couple the gate stack and the first capacitor electrode.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: May 7, 2024
    Assignee: Intel Corporation
    Inventors: Nazila Haratipour, Shriram Shivaraman, Sou-Chi Chang, Jack T. Kavalieros, Uygar E. Avci, Chia-Ching Lin, Seung Hoon Sung, Ashish Verma Penumatcha, Ian A. Young, Devin R. Merrill, Matthew V. Metz, I-Cheng Tung
  • Patent number: 11957579
    Abstract: A loader and method for loading a transcatheter heart valve into a delivery sheath or catheter is described that is also configured to facilitate retrieval of the heart valve back through the delivery sheath while protecting the delivery sheath from damage. Another loader provides for easier crimping and loading of a THV into a delivery sheath or catheter from a storage jar or container. A method for crimping a THV facilitates easier end user preparation of the valve for implantation and reduces the likelihood of tissue deformation in the valve during storage. These devices and methods for deploying THVs simplify the valve replacement procedure.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: April 16, 2024
    Assignee: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Asher L. Metchik, Thanh V. Nguyen, Raz Biran, Arvin T. Chang, Tarannum Ishaq Gutierrez, Jeff Lindstrom
  • Publication number: 20240099844
    Abstract: A delivery apparatus for a medical device can include a handle, a shaft, a plurality of sleeves, and a suture. The shaft includes a proximal end portion coupled to the handle and is configured to be disposed outside of a patient's body during an implantation procedure and a distal end portion configured to be disposed inside a patient's body during the implantation procedure. Each of the sleeves includes a connection portion coupled to the distal end portion of the shaft and a receiving portion configured to receive an apex of a stent or a prosthetic heart valve. The suture extends through the shaft and the sleeves and is configured for releasably securing the stent or the prosthetic heart valve to the receiving portions of the sleeves.
    Type: Application
    Filed: September 29, 2023
    Publication date: March 28, 2024
    Inventors: Arvin T. Chang, Yair A. Neumann, Gil Senesh, Hernan Altman, Scott Louis Pool, Hannah Gibson, Amanda Kristine Anderson White, Peter Phong Tran, Ly Th Phan
  • Publication number: 20240099838
    Abstract: A method for retrieving a previously inserted prosthetic valve is disclosed. In one example, a loader assembly is inserted through a hub of a delivery sheath device. The delivery sheath device includes an expandable sheath that extends into a blood vessel of a patient. The loader assembly is advanced in a distal direction until a distal section of the loader assembly extends into the expandable sheath which is attached to a distal end of the hub. The distal section has a larger inner diameter than a middle tube section of the loader assembly. A delivery catheter is retracted to move a prosthetic valve attached thereto in a proximal direction until the prosthetic valve is received within the distal section. The loader assembly and the delivery catheter are removed from a proximal end of the hub while the prosthetic valve is retained within the distal section.
    Type: Application
    Filed: December 11, 2023
    Publication date: March 28, 2024
    Inventors: Asher L. Metchik, Thanh V. Nguyen, Raz Biran, Arvin T. Chang, Tarannum Ishaq Gutierrez, Jeff Lindstrom
  • Publication number: 20240099892
    Abstract: An apparatus includes a shaft, an expandable dilator, and at least one ventilation pathway. The shaft defines a longitudinal axis and includes a distal and proximal ends with at least one shaft lumen. The expandable dilator includes body with its own proximal and distal ends. The body is configured to transition between a contracted state and an expanded state. The body is configured to dilate a Eustachian tube of a patient in the expanded state. The at least one ventilation pathway is configured to provide ventilation from the distal end of the body to the proximal end of the body when the body is in the expanded state. In some examples, the ventilation pathway includes a set of transversely oriented vent openings formed through the shaft. In some other examples, the ventilation pathway includes a space defined between one or more radially outwardly protruding features of the expandable dilator.
    Type: Application
    Filed: October 27, 2023
    Publication date: March 28, 2024
    Inventors: Peter F. Campbell, Daniel T. Harfe, Hung V. Ha, Ketan P. Muni, Andy Nguyen, Sivette Lam, John Y. Chang, Eric Goldfarb
  • Patent number: 11940848
    Abstract: An electronic device display may have pixels formed from crystalline semiconductor light-emitting diode dies, organic light-emitting diodes, or other pixel structures. The pixels may be formed on a display panel substrate. A display panel may extend continuously across the display or multiple display panels may be tiled in two dimensions to cover a larger display area. Interconnect substrates may have outwardly facing contacts that are electrically shorted to corresponding inwardly facing contacts such as inwardly facing metal pillars associated with the display panels. The interconnect substrates may be supported by glass layers. Integrated circuits may be embedded in the display panels and/or in the interconnect substrates. A display may have an active area with pixels that includes non-spline pixels in a non-spline display portion located above a straight edge of the display and spline pixel in a spline display portion located above a curved edge of the display.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: March 26, 2024
    Assignee: Apple Inc.
    Inventors: Elmar Gehlen, Zhen Zhang, Francois R. Jacob, Paul S. Drzaic, Han-Chieh Chang, Abbas Jamshidi Roudbari, Anshi Liang, Hopil Bae, Mahdi Farrokh Baroughi, Marc J. DeVincentis, Paolo Sacchetto, Tiffany T. Moy, Warren S. Rieutort-Louis, Yong Sun, Jonathan P. Mar, Zuoqian Wang, Ian D. Tracy, Sunggu Kang, Jaein Choi, Steven E. Molesa, Sandeep Chalasani, Jui-Chih Liao, Xin Zhao, Izhar Z. Ahmed
  • Patent number: 11940922
    Abstract: A method of processing in-memory commands in a high-bandwidth memory (HBM) system includes sending a function-in-HBM instruction to the HBM by a HBM memory controller of a GPU. A logic component of the HBM receives the FIM instruction and coordinates the instructions execution using the controller, an ALU, and a SRAM located on the logic component.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: March 26, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mu-Tien Chang, Krishna T. Malladi, Dimin Niu, Hongzhong Zheng
  • Publication number: 20240090842
    Abstract: A sensor implant system comprises a shunt implant comprising a central flow portion configured to maintain an opening through a tissue wall and a sensor implant device. The sensor implant device comprises a shunt body configured to fit at least partially within the central flow portion of the shunt implant and a sensor device coupled to the shunt body.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 21, 2024
    Inventors: Arvin T. Chang, Jean-Pierre Michel Rabbah, Kokou Anani Amefia, Michael G. Valdez, Steven McConnell
  • Publication number: 20240090841
    Abstract: A method comprises delivering a first implant to an orifice of a chamber of a heart, anchoring the first implant at the orifice, delivering a sensor device to the orifice, and coupling the sensor device to the first implant.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 21, 2024
    Inventors: Michael G. Valdez, Julie Ann Hinzman, Rani Abdullah Mahmoudi, Arvin T. Chang
  • Publication number: 20240081743
    Abstract: A sensor implant device comprises a sensor body, a sensor component, and one or more anchoring features coupled to the sensor body and configured to anchor within a blood flow pathway or left atrial appendage.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Inventors: Scott Louis Pool, Arvin T. Chang
  • Publication number: 20240024107
    Abstract: Anchors for securing an implant within a body organ and/or reshaping a body organ are provided herein. Anchors are configured for deployment in a body lumen or vasculature of the patient that are curved or conformable to accommodate anatomy of the patient. Such anchors can include deformable or collapsible structures upon tensioning of a bridging element in a lateral direction, or segmented tubes that can be adjusted by tightening of one or more tethers extending therethrough. Such anchors can be used as a posterior anchor in a blood vessel in implant systems having a tensioned bridging element extending between the posterior anchor and an anterior anchor deployed at another location within or along the body organ. Methods of deploying such anchors and use of multiple anchors or multiple bridging elements to a single anchor are also provided.
    Type: Application
    Filed: September 28, 2023
    Publication date: January 25, 2024
    Inventors: Timothy R. Machold, David A. Rahdert, Robert T. Chang, Ganesh Manoharan
  • Patent number: 11801138
    Abstract: A method for delivering a prosthetic valve to a native annulus of a heart can include inserting a delivery apparatus into a patient's body, advancing the delivery apparatus to an implantation location within the native annulus, retracting a delivery sheath of the delivery apparatus relative to the prosthetic valve to expose the prosthetic valve from a distal end of the delivery sheath, and after the prosthetic valve is exposed from the delivery sheath, expanding the prosthetic valve from a radially compressed state to a radially expanded state by reducing axial tension on a first end and a second end of the prosthetic valve.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: October 31, 2023
    Assignee: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Arvin T. Chang, Yair A. Neumann, Gil Senesh, Hernan Altman, Scott Louis Pool, Hannah Gibson, Amanda Kristine Anderson White, Peter Phong Tran, Ly Th Phan
  • Patent number: 11793639
    Abstract: Anchors for securing an implant within a body organ and/or reshaping a body organ are provided herein. Anchors are configured for deployment in a body lumen or vasculature of the patient that are curved or conformable to accommodate anatomy of the patient. Such anchors can include deformable or collapsible structures upon tensioning of a bridging element in a lateral direction, or segmented tubes that can be adjusted by tightening of one or more tethers extending therethrough. Such anchors can be used as a posterior anchor in a blood vessel in implant systems having a tensioned bridging element extending between the posterior anchor and an anterior anchor deployed at another location within or along the body organ. Methods of deploying such anchors and use of multiple anchors or multiple bridging elements to a single anchor are also provided.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: October 24, 2023
    Assignee: MVRx, Inc.
    Inventors: Timothy R. Machold, David A. Rahdert, Robert T. Chang, Ganesh Manoharan
  • Publication number: 20230329753
    Abstract: A method of shunting blood involves forming a first opening in a wall of a first blood vessel and a wall of a second blood vessel, anchoring a first port of a compliant fluid container to the wall of the first blood vessel such that the first port provides access between the first blood vessel and the second blood vessel through the first opening, and placing a body of the compliant fluid container within the second blood vessel.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 19, 2023
    Inventor: Arvin T. Chang
  • Publication number: 20230255761
    Abstract: A delivery cylinder includes a first tubular portion and a second tubular portion having a plurality of struts coupled to the first tubular portion and defining a volume for containing a radially compressed prosthetic implant. The struts include proximal end portions and main body portions extending from the proximal end portions in both an expanded configuration and a contracted configuration. The proximal end portions of each strut include a pair of first recessed portions defined in longitudinal edges of the strut, and a pair of second recessed portions defined in the longitudinal edges distally of the pair of first recessed portions. The pair of first recessed portions reduces a width of the strut to induce bending of the strut at the pair of first recessed portions, and the pair of second recessed portions reduces the width of the strut to induce bending at the pair of second recessed portions.
    Type: Application
    Filed: April 25, 2023
    Publication date: August 17, 2023
    Inventors: Arvin T. Chang, Sam Sok, Amanda Kristine Anderson White, Ajay Chadha
  • Publication number: 20230218232
    Abstract: A sensor implant device includes a shunt structure comprising a flow path conduit and a plurality of arms configured to secure the shunt structure to a tissue wall, and a pressure sensor device attached to one of the plurality of arms of the shunt structure. The pressure sensor device comprises one or more sensor elements, an antenna, control circuitry electrically coupled to the one or more sensor elements and the antenna, and a housing that houses the control circuitry.
    Type: Application
    Filed: March 8, 2023
    Publication date: July 13, 2023
    Inventors: Stanton J. Rowe, Arvin T. Chang, Joseph Arthur Passman, Scott Louis Pool, Jinny Lee, Viral Lalitmohan Gandhi, Alison S. Curtis, Gregory Bak-Boychuk, Emil Karapetian, Glen T. Rabito, Cristobal R. Hernandez
  • Patent number: 11666437
    Abstract: A delivery cylinder for a prosthetic implant can include a first tubular portion and a second tubular portion. The second tubular portion has a plurality of strut members coupled to the first tubular portion that define a volume for containing the prosthetic implant in a radially compressed state. The strut members can include respective flex regions configured such that application of force to the strut members causes deformation of the flex regions and corresponding radially inward or outward movement of the strut members relative to a longitudinal axis of the delivery cylinder between an expanded configuration and a contracted configuration.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: June 6, 2023
    Assignee: EDWARDS LIFESCIENCES CORPORATION
    Inventors: Arvin T. Chang, Sam Sok, Amanda Kristine Anderson White, Ajay Chadha
  • Publication number: 20230039392
    Abstract: A packaging material comprising a graphene-reinforced polymer matrix composite (G-PMC) is disclosed. The packaging material has improved barrier resistance to gas and liquid permeants. Also disclosed is a method of improving barrier resistance of a polymer to a permeant, the method comprising forming a graphene-reinforced polymer matrix composite within the polymer. The packaging material may be used for packaging food, drug, perfume, etc. and to make various containers.
    Type: Application
    Filed: August 29, 2022
    Publication date: February 9, 2023
    Applicant: Rutgers, The State University of New Jersey
    Inventors: Jennifer K. Lynch-Branzoi, Thomas J. Nosker, Bernard H. Kear, Charles T. Chang