Patents by Inventor G. D. H. Butler

G. D. H. Butler 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).

  • Suppression of fume in metal pouring
    Patent number: 5458671
    Abstract: Molten (M) is poured into a receiver (8,28) designed to reduce fume and then out into an open area (P) via an outlet (9,29) designed to cause the metal (M) to flow in a laminar flow. A hood (11) may be present above the receiver (8,28).
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: October 17, 1995
    Assignee: Multiserv International PLC
    Inventors: G. D. H. Butler, P. L. Purnell