Patents by Inventor Tze-Yee Ryan YAP

Tze-Yee Ryan YAP 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).

  • OUT-OF-PHASE ELECTRICAL WELDER AND PROCESS
    Publication number: 20090250440
    Abstract: Electrical welding process and device using intersecting, electrically contacting welding elements are disclosed. The intersecting welding elements are powered out of phase from each other, such that there is no short circuiting around the welding elements being heated and no electrical insulation is needed between intersecting welding elements. Current directors can be used to alternatingly direct the current through the intersecting welding elements. The process and device can be used to weld various workpieces, including thermoplastic binders and folders.
    Type: Application
    Filed: April 4, 2008
    Publication date: October 8, 2009
    Inventors: Tze-Yee Ryan YAP, Chi Sang Li, Kelvin Koon Wan Yao, Hoon Yeng Yap