Patents by Inventor Henry Franklin Tiedje

Henry Franklin Tiedje 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).

  • Effusion cell crucible with thermocouple
    Patent number: 5944903
    Abstract: A crucible with a thermocouple temperature sensor for use in a vapor effusion cell is disclosed. The upper portion of the crucible consists of a cup which contains a small quantity of the source material to be evaporated. A stem protruding from the base of the crucible has a deep well inside which a thermocouple is held, such that the thermocouple junction does not contact the crucible. The heat transfer to the junction is by radiation from the hot inner walls of the well. The junction temperature is slightly lower than, but reproducibly related to, the crucible temperature.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: August 31, 1999
    Inventor: Henry Franklin Tiedje