Patents by Inventor Paul R. Kasperek

Paul R. Kasperek 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).

  • Process for reworking circuit boards
    Patent number: 6349871
    Abstract: A method and apparatus is described for reworking a printed circuit board having plugged vias and plated through holes. The printed circuit board, supported by a movable local support, is heated from only the bottom side by a heating device near the area on the PCB that contains the plated through hole or holes to be reworked. The heating device is removed when the solder in the plugged PTH is completely melted. At that time, blast air is turned on to remove and blow off the excess solder in the PTH. The compressed air is more effective in displacing the molten solder than is vacuuming, and has less chance of damaging the PCB than do conventional reworking methods, due to the non-contact nature of the invention.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: February 26, 2002
    Assignee: International Business Machines Corporation
    Inventors: Norman A. Card, Jr., James M. Ergler, James D. Herard, Paul R. Kasperek, Richard S. McKinley, Der-jin Woan
  • Machine and process for reworking circuit boards
    Patent number: 6216938
    Abstract: A method and apparatus is described for reworking a printed circuit board having plugged vias and plated through holes. The printed circuit board, supported by a movable local support, is heated from only the bottom side by a heating device near the area on the PCB that contains the plated through hole or holes to be reworked. The heating device is removed when the solder in the plugged PTH is completely melted. At that time, blast air is turned on to remove and blow off the excess solder in the PTH. The compressed air is more effective in displacing the molten solder than is vacuuming, and has less chance of damaging the PCB than do conventional reworking methods, due to the non-contact nature of the invention.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: April 17, 2001
    Assignee: International Business Machines Corporation
    Inventors: Norman A. Card, Jr., James M. Ergler, James D. Herard, Paul R. Kasperek, Richard S. McKinley, Der-jin Woan