Patents by Inventor Daniel M. Lynch

Daniel M. Lynch 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).

  • Circuit board with high density power semiconductors
    Patent number: 8068346
    Abstract: A circuit board is provided with a plurality of MOSFETs (metal oxide semiconductor field effect transistors) each of which include a field effect transistor and an associated control circuit. The control circuits are mounted in a control section of the board remote from a power section mounting the MOSFETs. The present invention reduces the assembly steps required in the prior art wherein the MOSFET and its control circuit were mounted as preassembled units to the board. Moreover, the number of MOSFETs per unit area of board is increased by the present invention.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: November 29, 2011
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Josef Maier, Daniel M. Lynch
  • Polyurethane conformal coating process for a printed wiring board
    Patent number: 5863597
    Abstract: A cost-effective process for preventing mealing of a polyurethane conformal coating applied to a printed wiring board is described. The process includes utilizing a liquid photoimagable solder mask for protecting the circuitry within the board prior to applying the polyurethane conformal coating. The process further includes applying the polyurethane coating within a controlled maximum thickness of 0.0015 inches for preventing vesication of the conformal coating. Additionally, a manufactured printed circuit substrate incorporating these steps is described.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: January 26, 1999
    Assignee: Sundstrand Corporation
    Inventor: Daniel M. Lynch