Patents by Inventor Richard D. Langston

Richard D. Langston 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).

  • CBW protective clothing
    Patent number: 5112666
    Abstract: A composite material suitable for use as CBW protective clothing comprises, in combination:an outer layer (1) of an abrasion-resistant, water-repellent material;an intermediate layer (2) comprising activated charcoal cloth treated to provide liquid-repellency; andan inner layer (3) of an abrasion-resistant material laminated to the intermediate layer.This composite is light, breathable and has low thermal insulation properties, but provides good chemical protection.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: May 12, 1992
    Assignee: Charcoal Cloth Limited
    Inventor: Richard D. Langston
  • Wound dressing
    Patent number: 4928681
    Abstract: A wound dressing which comprises, in order:a layer of a permeable material suitable for putting in contact with the wound;a layer of a charcoal fabric;an absorbent pad; andone or more layers which protect and substantially prevent liquid strike-through.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: May 29, 1990
    Assignee: Charcoal Cloth Limited
    Inventors: Richard D. Langston, Frances C. Webb, Simon C. McBeath