Patents by Inventor Mark R. Hamilton

Mark R. Hamilton 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).

  • Patent number: 5932031
    Abstract: A mixture of a dye including one or more water soluble fluorescent dyes and a water soluble solder flux provides simple optical inspection under ultraviolet illumination with simple apparatus. The optical inspection is thus made highly sensitive to the presence of residual water soluble flux after washing and highly specific to the water soluble flux with which the dye is mixed. Thus, optical inspection can assure that all water soluble flux is removed to avoid subsequent corrosion while providing the possibility of leaving so-called "no clean" fluxes in place.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: August 3, 1999
    Assignee: International Business Machines Corporation
    Inventors: Mark R. Hamilton, Marc V. Malone, Charles J. Merz, III, Joseph D. Poole
  • Patent number: 5820697
    Abstract: A mixture of a dye including one or more water soluble fluorescent dyes and a water soluble solder flux provides simple optical inspection under ultraviolet illumination with simple apparatus. The optical inspection is thus made highly sensitive to the presence of residual water soluble flux after washing and highly specific to the water soluble flux with which the dye is mixed. Thus, optical inspection can assure that all water soluble flux is removed to avoid subsequent corrosion while providing the possibility of leaving so-called "no clean" fluxes in place.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: October 13, 1998
    Assignee: International Business Machines Corporation
    Inventors: Mark R. Hamilton, Marc V. Malone, Charles J. Merz, III, Joseph D. Poole