Patents by Inventor James Ervin Seely

James Ervin Seely 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).

  • Use of hydrophobic interaction chromatography to purify polyethylene glycols
    Patent number: 5935564
    Abstract: The present invention relates to a process for purifying polyethylene glycols (PEGs) which utilizes hydrophobic interaction chromatography (HIC) to separate the PEGs based on their size and on their end-group functionality. The purified PEGs can be used to modify biologically active molecules and improve overall production of such molecules.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: August 10, 1999
    Assignee: Amgen Inc.
    Inventor: James Ervin Seely
  • Use of hydrophobic interaction chromatography to purify polyethylene glycols
    Patent number: 5747639
    Abstract: The present invention relates to a process for purifying polyethylene glycols (PEGs) which utilizes hydrophobic interaction chromatography (HIC) to separate the PEGs based on their size and on their end-group functionality. The purified PEGs can be used to modify biologically active molecules and improve overall production of such molecules.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: May 5, 1998
    Assignee: Amgen Boulder Inc.
    Inventor: James Ervin Seely