Patents by Inventor Alasdair Hamish Robert Wallace Simpson

Alasdair Hamish Robert Wallace Simpson 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).

  • Composite material and methods of making the same
    Patent number: 6589590
    Abstract: A method of making artificial bone comprises providing a membrane of collagen with solutions of calcium ions and of phosphate ions on opposite sides of the membrane. The calcium ions and phosphate ions diffuse through the membrane and precipitate as a hydroxyapatite material. Control of ionic concentrations ensures that precipitation takes place within the fibrils of the membrane. The result is an artificial bone material comprising a matrix of collagen and a hydroxyapatite material deposited within the matrix.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: July 8, 2003
    Assignee: Isis Innovation Limited
    Inventors: Jan Tadeusz Czernuszka, Alison Christina Lawson, Alasdair Hamish Robert Wallace Simpson
  • Composite material and methods of making the same
    Publication number: 20020133238
    Abstract: A method of making artificial bone comprises providing a membrane of collagen with solutions of calcium ions and of phosphate ions on opposite sides of the membrane. The calcium ions and phosphate ions diffuse through the membrane and precipitate as a hydroxyapatite material. Control of ionic concentrations ensures that precipitation takes place within the fibrils of the membrane. The result is an artificial bone material comprising a matrix of collagen and a hydroxyapatite material deposited within the matrix.
    Type: Application
    Filed: February 27, 2002
    Publication date: September 19, 2002
    Inventors: Jan Tadeusz Czernuszka, Alison Christina Lawson, Alasdair Hamish Robert Wallace Simpson
  • Composite material and methods of making the same
    Patent number: 6395036
    Abstract: A method of making artificial bone comprises providing a membrane of collagen with solutions of calcium ions and of phosphate ions on opposite sides of the membrane. The calcium ions and phosphate ions diffuse through the membrane and precipitate as a hydroxyapatite material. Control of ionic concentrations ensures that precipitation takes place within the fibrils of the membrane. The result is an artificial bone material comprising a matrix of collagen and a hydroxyapatite material deposited within the matrix.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: May 28, 2002
    Assignee: Isis Innovation Limited
    Inventors: Jan Tadeusz Czernuszka, Alison Christina Lawson, Alasdair Hamish Robert Wallace Simpson