Patents by Inventor VAN DUC HA

VAN DUC HA 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).

  • Damping method for laser activation system
    Publication number: 20200070279
    Abstract: The patent presents a new method of damping for laser activation systems including five steps: Step 1: Locating, clamping the batteries, PCB; Step 2: Receiving hammering force; Step 3: Damping for batteries; Step 4: Damping for PCB; Step 5: Sliding electrical contact drive. This damping method has outstanding advantages in vibration suppression in different frequency ranges and amplitudes, along with applied damping according to the requirements and characteristics of each part. As a result, the two-level damping method improves stability and longevity of the laser activation system.
    Type: Application
    Filed: August 23, 2019
    Publication date: March 5, 2020
    Applicant: VIETTEL GROUP
    Inventors: VAN DUC HA, THANH NHON NGUYEN