Patents by Inventor Donald T. Nicholson

Donald T. Nicholson 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).

  • High efficiency removal of low density lipoprotein-cholesterol from whole blood
    Patent number: 5496637
    Abstract: The present invention relates to the efficient removal of low density lipoprotein cholesterol complex (LDL-C) from whole blood. More specifically, it relates to a process for making a microporous plasmapheresis membrane having an immobilized affinity agent. The immobilized affinity agent is polyacrylic acid bound directly and/or through an interaction with silica and/or calcium chloride to a microporous hollow fiber membrane.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: March 5, 1996
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marc E. Parham, Richard L. Duffy, Donald T. Nicholson
  • Process of making a membrane for high efficiency removal of low density lipoprotein-cholesterol from whole blood
    Patent number: 5258149
    Abstract: The present invention relates to the efficient removal of low density lipoprotein cholesterol complex (LDL-C) from whole blood. More specifically, it relates to a process for making a microporous plasmapheresis membrane having an immobilized affinity agent. The immobilized affinity agent is polyacrylic acid bound directly and/or through an interaction with silica and/or calcium chloride to a microporous hollow fiber membrane.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: November 2, 1993
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marc E. Parham, Richard L. Duffy, Donald T. Nicholson
  • Process of making membrane for removal of low density lipoprotein-cholesterol from whole blood
    Patent number: 5236644
    Abstract: The present invention relates to the efficient removal of low density lipoprotein cholesterol complex (LDL-C) from whole blood. More specifically, it relates to the use of an immobilized affinity agent on a microporous plasmapheresis membrane. The immobilized affinity agent is polyacrylic acid bound directly and/or through an interaction with silica and/or calcium chloride to a microporous hollow fiber membrane.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: August 17, 1993
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marc E. Parham, Richard L. Duffy, Donald T. Nicholson