Patents by Inventor Kirk Cryer

Kirk Cryer 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).

  • RP-HPLC method for the analysis and quantification of pancreatin active pharmaceutical agents
    Patent number: 9291630
    Abstract: Disclosed is a method for the separation, identification and quantification of multiple proteins in pancreatin active pharmaceutical ingredient samples.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: March 22, 2016
    Assignee: Scientific Protein Laboratories, LLC
    Inventors: Rachel Wezeman, Lin Rao, Kirk Cryer, Yan Wang
  • Polypeptide cleavage process
    Patent number: 7592432
    Abstract: The invention provides a palladium-promoted hydrolytic polypeptide cleavage process which selectively cleaves the polypeptide at a Cys-His cleavage site comprising solubilizing the polypeptide in a reaction mixture comprised of a palladium promoter dissolved in a high-concentration formic acid, wherein the concentration of the formic acid in the reaction mixture is between about 1 to about 22 molar.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: September 22, 2009
    Assignee: Restoragen, Inc.
    Inventors: Barton Holmquist, Daniel Strydom, Jin Seog Seo, Kirk Cryer
  • Polypeptide cleavage process
    Publication number: 20050227314
    Abstract: The invention provides a palladium-promoted hydrolytic polypeptide cleavage process which selectively cleaves the polypeptide at a Cys-His cleavage site comprising solubilizing the polypeptide in a reaction mixture comprised of a palladium promoter dissolved in a high-concentration formic acid, wherein the concentration of the formic acid in the reaction mixture is between about 1 to about 22 molar.
    Type: Application
    Filed: November 24, 2004
    Publication date: October 13, 2005
    Inventors: Barton Holmquist, Daniel Strydom, Jin Seo, Kirk Cryer