Patents by Inventor Li Wing-Chung

Li Wing-Chung 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).

  • Coffee making machines
    Patent number: 5549035
    Abstract: A coffee machine includes a microcomputer, a heater 14 and a thermistor element 17. The microcomputer is programmed to respond to several different temperature level signals provided by the element 17 for fully controlling operation of the heater. The machine has a pre-heat cycle, where the rate of temperature rise is slowed down, and an automatic cleaning cycle when required.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: August 27, 1996
    Assignee: Simatelex Manufactory Co., Ltd.
    Inventor: Li Wing-Chung