Patents by Inventor James D. Geis

James D. Geis 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).

  • Fluxless soldering method
    Patent number: 5609290
    Abstract: A fluxless soldering method utilizing a strongly internally bonded fluorine containing gas such as hydrogen fluoride (HF). The solder surface is exposed to the gas in place of a flux treatment, resulting in a modified surface layer which allows reflow or joining for an extended period.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: March 11, 1997
    Assignee: The University of North Carolina at Charlotte
    Inventors: Stephen M. Bobbio, Thomas D. DuBois, Farid M. Tranjan, George K. Lucey, Jr., James D. Geis, Robert F. Lipscomb, Timothy Piekarski
  • Automatic thermometer calibration system
    Patent number: RE28954
    Abstract: A system for automatically calibrating and classifying measuring instruments such as mercury clinical thermometers, by accurately determining the distance between two reference points established by two known reference parameters. The detection of the reference points is made by scanning a laser beam over the mercury column and detecting the change in the reflection characteristic of the beam at the upper level of the column.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: September 7, 1976
    Assignee: Kaye Thermometer Corporation
    Inventors: Cole H. Baker, James D. Geis, Harry Gluz, John H. Troll