Patents by Inventor Pen C. Tseng

Pen C. Tseng 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).

  • Process for manufacturing moisture exchange element
    Patent number: 5254195
    Abstract: A process for preparing a moisture exchange element which comprises impregnating a substrate made of organic or inorganic fiber with an aqueous impregnating solution containing colloidal silica, an acid and a metallic cation; drying and gelatinizing the impregnating solution deposited on the impregnated substrate is disclosed. The absorbent formed on the substrate after the impregnating solution is dried has a pore size of about 60-70 .ANG., thus allowing the moisture exchange element of the present invention to provide improved moisture adsorbing/desorbing ability.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: October 19, 1993
    Assignee: Industrial Technology Research Institute
    Inventors: Pen C. Tseng, Yew K. Chuah, Chen U. Hwang, Shiao J. Chu, Han T. Chang, Chin S. Huang, Chang C. Chen, Po/Yu Chen