Patents by Inventor Robert D. MacInnes

Robert D. MacInnes 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 heating objects to and maintaining them at a desired temperature
    Patent number: 4568277
    Abstract: An improved apparatus and method are disclosed for heating objects, such as electronic chips being bonded to substrates, in which a copper heat exchanger element (12) comprises a circuitous interior passage (26) through which gases pass from a source (30) to be heated by a heater (74) to a desired temperature and to be cleansed of unwanted oxygen by catalytic reaction, prior to entering a furnace chamber (22) heated from below by the heat exchanger element (12) and from above by a further heater (72) and copper plate (60), whereby essentially uniform gas temperature, acceptably low oxygen concentration and fast cycling times are provided in the furnace chamber (22). See FIG. 1.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: February 4, 1986
    Assignee: International Business Machines Corporation
    Inventors: Robert D. MacInnes, Carlos C. Periu, Robert L. Rohr