Patents by Inventor Chiu-Fong Liaw

Chiu-Fong Liaw 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).

  • Patent number: 5434551
    Abstract: A gas sensor that has its heater and sensing layer on opposite sides of the substrate. The gas sensor includes a buffer layer separating the gas-sensing layer from the substrate to improve mechanical strength and electrical properties. The heater is preferably formed of nickel paste and is provided on the back of the substrate.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: July 18, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: I-Cherng Chen, Ming-Hann Tzeng, Ping-Ping Tsai, Chiu-Fong Liaw, James C. H. Ku
  • Patent number: 5273779
    Abstract: A method of fabricating a gas sensor which comprises a substrate; a buffer layer coated on the substrate; at least one gas sensing layer arranged on the buffer layer; a pair of electrodes disposed on the gas sensing layer; and a catalytic layer coated on the gas sensing layer. A spin coating process is performed, using centrifugal force, to form the layers which are thin and evenly deposited on the substrate. The gas sensing layer of the gas sensor is formed before forming the electrodes of the same such that the heat treatment thereto can be carried out at 800.degree. C. which is much higher than the conventional temperature of 600.degree. C. The bonding of the gas sensing layer to the substrate is thereby much stronger than the conventional gas sensor.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: December 28, 1993
    Assignee: Industrial Technology Research Institute
    Inventors: I-Cherng Chen, Ming-Hann Tzeng, Ping-Ping Tsai, Chiu-Fong Liaw, James C. H. Ku
  • Patent number: 4918567
    Abstract: A new type of corona discharging apparatus. The apparatus revealed is equipped with a pair of thin electrodes which are edge-to-edge parallelly arranged, and bewteen them is an air gap. It is characteristic of this apparatus that the equipped electrodes are allowed to reciprocate along a definite path within a desired distance. By using the apparatus, corona discharge on polymer film can be performed, either in a still or moving state, for a considerable length of time without causing dielectric breakdown. One of the practical applications of this invention is poling of stretched PVDF (polyvinylidene flouride) films to gain high piezolelectric activity with high production yield.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: April 17, 1990
    Assignee: Industrial Technology Research Institute
    Inventor: Chiu-Fong Liaw