Patents by Inventor Bum K. Moon

Bum K. Moon 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).

  • Abrasion-proof tester
    Patent number: 4986109
    Abstract: An abrasion-proof tester for analyzing granularity of abraded powder includes abrasive material adhered on a abrasive plate fixed on a driving shaft of a variable speed motor is closely contacted with test pieces supported by supporter which is resiliently supported and uniformly pressed by compression spring and multiple stage granularity measuring device oscillated by oscillating plate is mounted at a side of said abrasive plate which is heated by electric heater controlled by digital temperature sensor and chromel-alumel thermocouple.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: January 22, 1991
    Assignee: Goldstar Co., Ltd.
    Inventor: Bum K. Moon