Patents Assigned to H&H Research & Development, LLC
  • Method for electrolytic cleaning of aluminum
    Patent number: 10968532
    Abstract: A method for cleaning a surface of an aluminum or aluminum alloy body by immersing the surface in a basic aqueous electrolyte formed essentially from dissolved trisodium phosphate, flowing DC current through the electrolyte and the body for cleaning, and then removing the body from the electrolyte. An additional cleaning step, which may include ultrasonic cleaning, may be performed to remove loose matter adhering to the body after the electrolytic cleaning.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: April 6, 2021
    Assignee: H&H Research & Development, LLC
    Inventors: John E. Hoffman, Jr., Richard A. Hoffman, Sr.