Patents by Inventor Kartoa CHOW

Kartoa CHOW 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).

  • Purifying insulin using cation exchange and reverse phase chromatography in the presence of an organic modifier and elevated temperature
    Patent number: 11198718
    Abstract: A process is described for purifying insulin and insulin analogs that comprises high-pressure liquid chromatography with an acidic cation exchange medium performed in the presence of a water miscible organic modifier and at an elevated temperature followed by reverse phase chromatography performed in the presence of a water miscible organic modifier and at an elevated temperature.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: December 14, 2021
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Allison D. Ortigosa, Michael P. Coleman, Shibu T. George, Michael A. Rauscher, Mark C. Sleevi, Kartoa Chow
  • PURIFYING INSULIN USING CATION EXCHANGE AND REVERSE PHASE CHROMATOGRAPHY IN THE PRESENCE OF AN ORGANIC MODIFIER AND ELEVATED TEMPERATURE
    Publication number: 20200010525
    Abstract: A process is described for purifying insulin and insulin analogs that comprises high-pressure liquid chromatography with an acidic cation exchange medium performed in the presence of a water miscible organic modifier and at an elevated temperature followed by reverse phase chromatography performed in the presence of a water miscible organic modifier and at an elevated temperature.
    Type: Application
    Filed: August 27, 2019
    Publication date: January 9, 2020
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Allison D. Ortigosa, Michael P. Coleman, Shibu T. George, Michael A. Rauscher, Mark C. Sleevi, Kartoa Chow
  • Process for purifying insulin and analogues thereof
    Patent number: 10421795
    Abstract: A process is described for purifying insulin and insulin analogs that comprises high-pressure liquid chromatography with an acidic cation exchange medium performed under low to moderate pressure at an elevated temperature.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 24, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Michael P. Coleman, Allison D. Ortigosa, Mark C. Sleevi, Kartoa Chow
  • Purifying insulin using cation exchange and reverse phase chromatography in the presence of an organic modifier and elevated temperature
    Patent number: 10407483
    Abstract: A process is described for purifying insulin and insulin analogs that comprises high-pressure liquid chromatography with an acidic cation exchange medium performed in the presence of a water miscible organic modifier and at an elevated temperature followed by reverse phase chromatography performed in the presence of a water miscible organic modifier and at an elevated temperature.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: September 10, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Allison D. Ortigosa, Michael P. Coleman, Shibu T. George, Michael A. Rauscher, Mark C. Sleevi, Kartoa Chow
  • PURIFYING INSULIN USING CATION EXCHANGE AND REVERSE PHASE CHROMATOGRAPHY IN THE PRESENCE OF AN ORGANIC MODIFIER AND ELEVATED TEMPERATURE
    Publication number: 20170015725
    Abstract: A process is described for purifying insulin and insulin analogs that comprises high-pressure liquid chromatography with an acidic cation exchange medium performed in the presence of a water miscible organic modifier and at an elevated temperature followed by reverse phase chromatography performed in the presence of a water miscible organic modifier and at an elevated temperature.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 19, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Allison D. Ortigosa, Michael P. Coleman, Shibu T. George, Michael A. Rauscher, Mark C. Sleevi, Kartoa Chow
  • PROCESS FOR PURIFYING INSULIN AND ANALOGUES THEREOF
    Publication number: 20150329612
    Abstract: A process is described for purifying insulin and insulin analogues that comprises high-pressure liquid chromatography with an acidic cation exchange medium performed under low to moderate pressure at an elevated temperature.
    Type: Application
    Filed: December 12, 2013
    Publication date: November 19, 2015
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Michael P. COLEMAN, Allison D. ORTIGOSA, Mark C. SLEEVI, Kartoa CHOW