Patents by Inventor Phong Cha

Phong Cha 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).

  • BACKING WITH GRAPHENE FOR AN ULTRASOUND TRANSDUCER
    Publication number: 20260053469
    Abstract: For ultrasound transducers. graphene, such as flakes or sheets, is used in backers with a matrix of polymer. The graphene provides good attenuation at low frequencies and thermal conductivity.
    Type: Application
    Filed: August 23, 2024
    Publication date: February 26, 2026
    Inventors: Xuan-Ming Lu, Isaac Abothu, Phong Cha, Jeongrae Cho, SeungHee Lee, William R. Dreschel
  • COMPOSITE ACOUSTIC ABSORBER FOR ULTRASOUND TRANSDUCER ARRAY
    Publication number: 20250275752
    Abstract: Acoustic absorbers are formed for ultrasound transducers. The acoustic absorber provides desired attenuation, impedance, and thermal conductivity qualities based on a filler of rubber, ceramic, and metal particles. The relative amounts of the different fillers may be adjusted to tune the acoustic attenuation, thermal conductivity, and/or acoustic impedance.
    Type: Application
    Filed: May 19, 2025
    Publication date: September 4, 2025
    Inventors: Isaac Abothu, Stephen Davis, Phong Cha
  • Composite acoustic absorber for ultrasound transducer array
    Patent number: 12383230
    Abstract: Acoustic absorbers are formed for ultrasound transducers. The acoustic absorber provides desired attenuation, impedance, and thermal conductivity qualities based on a filler of rubber, ceramic, and metal particles. The relative amounts of the different fillers may be adjusted to tune the acoustic attenuation, thermal conductivity, and/or acoustic impedance.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: August 12, 2025
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Isaac Abothu, Stephen Davis, Phong Cha
  • COMPOSITE ACOUSTIC ABSORBER FOR ULTRASOUND TRANSDUCER ARRAY
    Publication number: 20200155119
    Abstract: Acoustic absorbers are formed for ultrasound transducers. The acoustic absorber provides desired attenuation, impedance, and thermal conductivity qualities based on a filler of rubber, ceramic, and metal particles. The relative amounts of the different fillers may be adjusted to tune the acoustic attenuation, thermal conductivity, and/or acoustic impedance.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 21, 2020
    Inventors: Isaac Abothu, Stephen Davis, Phong Cha