Patents by Inventor Stephen M. Lang

Stephen M. Lang 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).

  • Patent number: 5445604
    Abstract: Low adherency wound dressings which comprise a wound facing layer, an intermediate absorbent layer and an outer layer characterized in that the wound facing layer comprises a conformable elastomeric apertured film, the intermediate absorbent layer comprises a conformable hydrophilic foam and the outer layer comprises a continuous moisture vapor transmitting conformable film; materials therefor and processes for the manufacture thereof are described.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: August 29, 1995
    Assignee: Smith & Nephew Associated Companies, Ltd.
    Inventor: Stephen M. Lang
  • Patent number: 5147338
    Abstract: The present invention is directed to the manufacture and use of absorptive wound dressings for treatment of burns and other wounds wherein the dressing has a reduced tendency to adhere to the wound and can act as a bacterial barrier. The wound dressing is comprised of a wound facing layer, an intermediate absorbent layer and an outer layer. The wound dressing of the present invention also has a topically effective medicament for treatment of burns and other wounds.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 15, 1992
    Assignee: Smith and Nephew Associated Companies Limited
    Inventors: Stephen M. Lang, David F. Webster
  • Patent number: 4995382
    Abstract: A wound dressing which comprises an absorbent layer comprising an open cell foam of a hydrophilic polymer and a wound facing layer comprising either a conformable net of elastomer coated with adhesive on its wound facing surface or an adhesive layer, pattern spread in a conformable net-like configuration, the dressing optionally also having a conformable moisture vapour transmitting outer layer; and a process for making said dressing.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: February 26, 1991
    Assignee: Smith and Nephew Associated Companies Limited
    Inventors: Stephen M. Lang, David F. Webster
  • Patent number: 4860737
    Abstract: A low adherency wound dressing which comprises a wound facing layer, an intermediate absorbent layer and an outer layer wherein the wound facing layer comprises a conformable net of elastomer, the intermediate absorbent layer comprises a conformable open cell foam of hydrophilic polymer, and the outer layer comprises a conformable microporous film; and a process for making said dressing.
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: August 29, 1989
    Assignee: Smith and Nephew Associated Companies p.l.c.
    Inventors: Stephen M. Lang, David F. Webster
  • Patent number: 4753231
    Abstract: Moisture vapor transmitting wound dressings are described which comprise (a) a conformable backing layer which has an adhesive on one of its surfaces and in which at least one of the backing layer and adhesive layer is continuous so as to provide a barrier both to bacteria and to liquid water when the dressing is in place on a wound and (b) a low wound adherency absorbent pad positioned on the adhesive side of the backing layer. The area of the pad is less than that of the backing layer so that an adhesive margin remains exposed on two, or preferably four, sides of the pad so that the backing layer may be adhered to the skin surrounding the wound area. The wound dressings have a moisture vapor transmission rate of from 500 to 2000 grams/square meter/24 hours at 37.5.degree. C. and 100% to 10% relative humidity difference. Materials for use in the dressings and processes for manufacture of the dressings are also described.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: June 28, 1988
    Assignee: Smith & Nephew Associated Companies p.l.c.
    Inventors: Stephen M. Lang, David F. Webster