Patents by Inventor Hwa Ming Huang

Hwa Ming Huang 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).

  • Device and method for indicating the dispensing of a predetermined amount of a material
    Patent number: 5772074
    Abstract: A method is presented for indicating the dispensing of a predetermined amount of a material in a dispenser having a dispenser device which dispenses the material during periods of operation and frequency or intensity which can be varied. The inventive method includes determining the amount of time the dispenser device is operational; calculating a dispensing score representative of the time of operation of the dispenser device multiplied by a factor representative of the frequency or intensity of dispensing; and producing a signal indicating the dispensing of the predetermined amount of the material to be dispensed when the dispensing score is at least equal to a predetermined total score required for dispensing a predetermined amount of material. A dispenser incorporating such method is also described.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: June 30, 1998
    Assignee: Waterbury Companies, Inc.
    Inventors: Dwain Dial, Joseph Chang, Hwa Ming Huang