Patents by Inventor I-Yuan Wei

I-Yuan Wei 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).

  • Durable plating for electrical contact terminals
    Patent number: 5129143
    Abstract: Electrical contact terminals having two layer plated coating thereon is disclosed. The coating consists of a layer of palladium having a macrostress in the range of 30,000 to 140,000 psi and a layer of gold, the gold being at lest 99.9% pure and having a Knoop hardness from 60 to 90. A coating comprised of medium stress palladium and gold substantially and unexpectedly inmproves the durability of terminals as compared to similar coatings using gold and low or high stress palladium.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: July 14, 1992
    Assignee: AMP Incorporated
    Inventors: I-Yuan Wei, John R. Miller