Patents by Inventor James Yu Chung Chang

James Yu Chung 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).

  • Publication number: 20030196680
    Abstract: A Process Module (“PM”) is designed to facilitate Transport Polymerization (“TP”) of precursors that are useful for preparations of low Dielectric Constant (“∈”) films. The PM consists primarily of a Material Delivery System (“MDS”) with a high temperature Vapor Phase Controller (“VFC”), a TP Reactor, a Treatment Chamber, a Deposition Chamber and a Pumping System. The PM is designed to facilitate TP for new precursors and for film deposition and stabilization processes.
    Type: Application
    Filed: April 19, 2002
    Publication date: October 23, 2003
    Applicant: DIELECTRIC SYSTEMS, INC
    Inventors: Chung J. Lee, Oanh Nguyen, Wei Shiang Charles Lee, Michael Solomensky, Atul Kumar, James Yu Chung Chang, Binh Nguyen
  • Publication number: 20030198578
    Abstract: A multi-stage transport polymerization (“TP”) reactor useful for making a thin film for the fabrication of integrated circuits. One TP reactor has two distinct heating zones that facilitate the cracking of specific precursor materials. The multi-stage reactor comprises a first low temperature heating zone that heats incoming precursor materials to a temperature that is lower than the “cracking” temperature of the precursor. The second heating zone is maintained at a temperature useful for breaking the chemical bonds of a desired leaving groups in the selected precursor. Specialized heating bodies, which transfer heat to the precursor material in the low and high temperature zones, are used as elements of the invention that can simultaneously decrease the total volume and increase the inside surface area of the TP reactor. Chemistries of precursors used in the multi-stage reactor are also provided.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 23, 2003
    Applicant: DIELECTRIC SYSTEMS, INC.
    Inventors: Chung J. Lee, Oanh Nguyen, Atul Kumar, Jeff Wu, Michael Solomensky, James Yu Chung Chang, Binh Nguyen