Patents by Inventor Tzung-Wu Hou

Tzung-Wu Hou 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).

  • ACID REPLENISHING SYSTEM AND METHOD FOR ACID TANK
    Publication number: 20170098558
    Abstract: An acid replenishing system includes an acid tank, a draining apparatus, an acid replenishing apparatus, and a control unit. The acid tank contains a used acid solution. The draining apparatus drains an amount of the used acid solution from the acid tank. The acid replenishing apparatus replenishes an amount of a replenishing acid into the acid tank. The control unit controls the draining apparatus and the acid replenishing apparatus to perform a plurality of acid replenishing stages, so a total set amount of the replenishing acid to be added into the acid tank has been replenished.
    Type: Application
    Filed: November 6, 2015
    Publication date: April 6, 2017
    Inventors: Tzung-Wu Hou, Po-Lun Cheng, Meng-Che Yeh, Feng-Nan Chu