Patents by Inventor Ming Chago Chang

Ming Chago Chang 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).

  • Alarm system for detecting waste liquid discharge blockage
    Patent number: 6292103
    Abstract: A alarm system for waste liquid discharge blockage for early warning when blockage results from waste liquid. In the blockage alarm system for waste liquid discharge according to the present invention, the discharge line connected to the outlet of waste liquid of the machine is arranged such that the discharge line is angled in the ranges of about 185 to 265 degrees to allow the waste liquid flow smoothly. The first pipe and the second pipe of the sensing line are arranged roughly under the connection of the discharge line and the lowest outlet, and located to make the angle between the first pipe and the discharge line of the sensing region in the range of about 95 to 175 degrees and the angle between the second pipe and the discharge line of the sensing region in the range of about 95 to 175 degrees when the discharge line of the sensing region is vertical. The flow back of the waste liquid into the sensing region can be inhibited. A sensor can be provided in the sensing line for detection of blockage.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: September 18, 2001
    Assignee: Macronix International Co., Ltd.
    Inventors: Ching Hua Cho, Ming Chago Chang, Yih Hwang Huang, Wei Hao Lai