Patents by Inventor Tim Stephen Ligman

Tim Stephen Ligman 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).

  • Method of preparing a composition based on hyaluronic acid
    Patent number: 9822223
    Abstract: The invention relates to a method of preparing a composition, the composition comprising a crosslinked first polymer, optionally a second polymer, which may be crosslinked or non-crosslinked, and water, wherein the first and the second polymer are selected from a polysaccharide, comprising at least steps (i) to (iv): (i) crosslinking a mixture comprising the first polymer and water; (ii) subsequent to the crosslinking in step (i), terminating the crosslinking; (iii) optionally blending the product obtained in step (ii) with the second polymer; (iv) subjecting the product obtained in step (iii) to dialysis.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: November 21, 2017
    Assignee: MERZ PHARMA GmbH & Co. KGaA
    Inventors: Heiko Barg, Josef Friedrich, Wolfgang Liebetrau, Robert Voigts, Tim Stephen Ligman
  • METHOD OF PREPARING A COMPOSITION BASED ON HYALURONIC ACID
    Publication number: 20150232623
    Abstract: The invention relates to a method of preparing a composition, the composition comprising a crosslinked first polymer, optionally a second polymer, which may be crosslinked or non-crosslinked, and water, wherein the first and the second polymer are selected from a polysaccharide, comprising at least steps (i) to (iv): (i) crosslinking a mixture comprising the first polymer and water; (ii) subsequent to the crosslinking in step (i), terminating the crosslinking; (iii) optionally blending the product obtained in step (ii) with the second polymer; (iv) subjecting the product obtained in step (iii) to dialysis.
    Type: Application
    Filed: June 14, 2013
    Publication date: August 20, 2015
    Inventors: Heiko Barg, Josef Friedrich, Wolfgang Liebetrau, Robert Voigts, Tim Stephen Ligman