Patents by Inventor John D. M. Pearson

John D. M. Pearson 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).

  • Nitrocellulose propellant composition
    Patent number: 5254186
    Abstract: Nitrocellulose propellant compositions are provided comprising zinc oxide as ballistic modifier, advantageously in conjunction with one or more conventional ballistic modifiers for example, lead or copper compounds such as lead stearate, lead acetophthalate, lead B-resorcylate and basic copper salicylate. The propellant compositions exhibit good quality plateau burning over a useful pressure range for a wide range of burning rates.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: October 19, 1993
    Assignee: Royal Ordnance plc
    Inventors: Thomas B. Downes, John D. M. Pearson