Patents by Inventor Roger Bilham

Roger Bilham 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).

  • Lead-free tin alloy
    Patent number: 6086687
    Abstract: A lead-free tin alloy for solder joints comprising up to 0.25% by weight of indium and a grain refiner which is an alloy consisting of, by weight, 2.5 to 10% aluminium, 1 to 5% magnesium and balance zinc. The alloys have improved mechanical properties, such as creep strength, and an improved thermal fatigue strength.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: July 11, 2000
    Assignee: Alpha Fry, Limited
    Inventors: Martinus Adrianus Oud, Roger Bilham