Patents by Inventor Donald P. Schwarz

Donald P. Schwarz 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).

  • Apparatus for making insert molded circuitry
    Patent number: 5203060
    Abstract: A method and apparatus are provided for forming insert molded circuits. The process includes inserting a circuit network comprised of a lace curtain with a plurality of individual circuits which are connected by interconnect members into a mold and then separating the individual circuits in the mold by cutting the interconnect members while the lace curtain is in the mold. After the interconnect members have been severed, plastic is injected into the mold thereby surrounding the individual traces. A mold for performing the process is disclosed which includes a retractable punch arrangement.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: April 20, 1993
    Inventors: James E. Mraz, Martin T. Schwartz, James M. Kemp, Joel M. Schotanus, Donald P. Schwarz
  • Process for making insert molded circuit
    Patent number: 4965933
    Abstract: A method and apparatus are provided for forming insert molded circuits. The process includes inserting a circuit network comprised of a lace curtain with a plurality of individual circuits which are connected by interconnect members into a mold and then separating the individual circuits in the mold by cutting the interconnect members while the lace curtain is in the mold. After the interconnect members have been severed, plastic is injected into the mold thereby surrounding the individual traces. A mold for performing the process is disclosed which includes a retractable punch arrangement.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: October 30, 1990
    Assignee: The Cherry Corporation
    Inventors: James E. Mraz, Martin T. Schwartz, James M. Kemp, Joel M. Schotanus, Donald P. Schwarz