Patents Assigned to ES Beta, Inc.
  • Patent number: 9472361
    Abstract: An improved printed circuit board contacts that are used to implement switch contacts of keypads and keyboards combining gold and silver plating over copper conductors. In the preferred embodiment of FIG. 5 shows a cross section of the printed circuit board 14 and the switch contact 20, where the switch contact material is electrolysis immersion silver layer 26 plated onto copper layer 22 and an electrolysis immersion gold layer 28 plated over that. An alternate embodiment is shown in FIG. 4 of a printed circuit board 14 with a switch contact 20, wherein a layer of nickel 24 is plated over the copper layer 22, then the silver layer 26 is plated onto the nickel 24, then the gold layer 28 is the topmost layer. Here the nickel layer is used to prevent copper migration into the other layers.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: October 18, 2016
    Assignee: ES Beta, Inc.
    Inventor: Peter J. Mikan