Patents by Inventor David T. Welsh

David T. Welsh 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).

  • Methods of preserving prokaryotic cells and compositions obtained thereby
    Publication number: 20030113900
    Abstract: This invention provides methods of drying and stabilizing prokaryotic cells, and the compositions obtained thereby. The cells are first cultured or incubated under conditions sufficient to induce intracellular trehalose, suspended in a stabilizing solution and dried to form a solid glass. The resulting product is storage-stable at room temperature, showing little viability loss on storage.
    Type: Application
    Filed: August 7, 2002
    Publication date: June 19, 2003
    Inventors: Alan G. Tunnacliffe, David T. Welsh, Bruce J. Roser, Kamaljit S. Dhaliwal, Camilo Colaco
  • Methods of preserving prokaryotic cells and compositions obtained thereby
    Patent number: 6468782
    Abstract: This invention provides methods of drying and stabilizing prokaryotic cells, and the compositions obtained thereby. The cells are first cultured or incubated under conditions sufficient to induce intracellular trehalose, suspended in a stabilizing solution and dried to form a solid glass. The resulting product is storage-stable at room temperature, showing little viability loss on storage.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: October 22, 2002
    Assignee: Quadrant Healthcare (UK) Limited
    Inventors: Alan G. Tunnacliffe, David T. Welsh, Bruce J. Roser, Kamaljit S. Dhaliwal, Camilo Colaco