Patents by Inventor Ross Wallingford

Ross Wallingford 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 for analyzing activated polyethylene glycol compounds
    Patent number: 8202732
    Abstract: A chemical analysis method for the determination of RO(CH2CH2O)nH, RO(C2H4O)nA, and AO(C2H4O)nA in a mixture thereof, wherein R is an alkyl group, A is a functional group for coupling with a surface or a biologically active material or another thing of use and n is an integer greater than 10. The method includes derivatizing the A groups of the mixture with a derivatizing agent to form a derivatized mixture comprising RO(CH2CH2O)nH, RO(C2H4O)nAD, and DAO(C2H4O)nAD, wherein AD is the derivatized A group. The second step is chromatographing a sample of the derivatized mixture by liquid chromatography under critical conditions to determine the relative amounts of RO(CH2CH2O)nH, RO(C2H4O)nAD, and DAO(C2H4O)nAD in the derivatized mixture.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: June 19, 2012
    Assignee: Dr. Reddy's Laboratories (EU) Limited
    Inventors: Ross A Wallingford, Maciej Turowski
  • METHOD FOR ANALYZING ACTIVATED POLYETHYLENE GLYCOL COMPOUNDS
    Publication number: 20120125852
    Abstract: A chemical analysis method for the determination of RO(CH2CH2O)nH, RO(C2H4O)nA, and AO(C2H4O)nA in a mixture thereof, wherein R is an alkyl group, A is a functional group for coupling with a surface or a biologically active material or another thing of use and n is an integer greater than 10. The method includes the derivatizing the A groups of the mixture with a derivatizing agent to form a derivatized mixture comprising RO(CH2CH2O)nH, RO(C2H4O)nAD, and DAO(C2H4O)nAD, wherein AD is the derivatized A group. The second step is chromatographing a sample of the derivatized mixture by liquid chromatography under critical conditions to determine the relative amounts of RO(CH2CH2O)nH, RO(C2H4O)nAD, and DAO(C2H4O)nAD in the derivatized mixture.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 24, 2012
    Applicant: DR. REDDY'S LABORATORIES (EU) LIMITED
    Inventors: Ross A. Wallingford, Maciej Turowski
  • Method for analyzing activated polyethylene glycol compounds
    Patent number: 7824919
    Abstract: A chemical analysis method for the determination of RO(CH2CH2O)nH, RO(C2H4O)nA, and AO(C2H4O)nA in a mixture thereof, wherein R is an alkyl group, A is a functional group for coupling with a surface or a biologically active material or another thing of use and n is an integer greater than 10. The method includes the step of chromatographing a sample of the mixture by liquid chromatography under critical conditions to determine the relative amounts of RO(CH2CH2O)n H, RO(C2H4O)nA, and AO(C2H4O)nA in the mixture. In addition a chemical analysis method for the determination of RO(CH2CH2O)nH, RO(C2H4O)nA, and AO(C2H4O)nA in a mixture thereof, wherein R is an alkyl group, A is a functional group for coupling with a biologically active material and n is an integer greater than 10. The method includes two steps.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: November 2, 2010
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Ross A. Wallingford, Maciej Turowski
  • ANALYSIS OF HIGH MOLECULAR WEIGHT MPEG ALCOHOL COMPOSITIONS
    Publication number: 20100041160
    Abstract: The invention is directed toward novel high molecular weight and high purity mPEG alcohol compositions as well as a process for obtaining said compositions by removing PEG diols from the mPEG alcohol after polymerization is complete.
    Type: Application
    Filed: October 22, 2009
    Publication date: February 18, 2010
    Inventors: Chris Chappelow, Edward D. Daugs, Sterling C. Gatling, Kevin D. Sikkema, Maciej Turowski, Ross A. Wallingford
  • Method for analyzing activated polyethylene glycol compounds
    Publication number: 20060198818
    Abstract: A chemical analysis method for the determination of RO(CH2CH2O)nH, RO(C2H4O)nA, and AO(C2H4O)nA in a mixture thereof, wherein R is an alkyl group, A is a functional group for coupling with a surface or a biologically active material or another thing of use and n is an interger greater than 10. The method includes the step of chromatographing a sample of the mixture by liquid chromatography under critical conditions to determine the relative amounts of RO(CH2CH2O)n H, RO(C2H4O)nA, and AO(C2H4O)nA in the mixture. In addition a a chemical analysis method for the determination of RO(CH2CH2O)nH, RO(C2H4O)nA, and AO(C2H4O)nA in a mixture thereof, wherein R is an alkyl group, A is a functional group for coupling with a biologically active material and n is an interger greater than 10. The method includes two steps.
    Type: Application
    Filed: March 4, 2005
    Publication date: September 7, 2006
    Inventors: Ross Wallingford, Maciej Turowski
  • Novel high purity and high molecular weight mPEG alcohol compositions
    Publication number: 20060045866
    Abstract: The invention is directed toward novel high molecular weight and high purity mPEG alcohol compositions as well as a process for obtaining said compositions by removing PEG diols from the mPEG alcohol after polymerization is complete.
    Type: Application
    Filed: September 1, 2004
    Publication date: March 2, 2006
    Inventors: Chris Chappelow, Edward Daugs, Sterling Gatling, Kevin Sikkema, Maciej Turowski, Ross Wallingford