Patents by Inventor Asa Rudstedt

Asa Rudstedt 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).

  • Cross-linked cellulose membranes
    Patent number: 9522365
    Abstract: The invention relates to a process for making porous cross-linked charged cellulosic polymeric membranes capable of binding to a target molecule. The invention provides methods for separating target molecules from other components in a solution comprising use of membranes obtainable by the process of the invention. The method has particular utility in separating proteins and nucleic acids from cell lysates and cultures.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: December 20, 2016
    Assignee: GE Healthcare BioProcess R&D AB
    Inventors: Asa Rudstedt, Andreas Axen, Nils Norrman, Anders Larsson
  • CROSS-LINKED CELLULOSE MEMBRANES
    Publication number: 20100059440
    Abstract: The invention relates to a process for making porous cross-linked charged cellulosic polymeric membranes capable of binding to a target molecule. The invention provides methods for separating target molecules from other components in a solution comprising use of membranes obtainable by the process of the invention. The method has particular utility in separating proteins and nucleic acids from cell lysates and cultures.
    Type: Application
    Filed: February 7, 2008
    Publication date: March 11, 2010
    Applicant: GE HEALTH CARE BIO-SCIENCES AB
    Inventors: Asa Rudstedt, Andreas Axen, Nils Norrman, Anders Larsson
  • Use of ph-responsive polymers
    Publication number: 20060189795
    Abstract: The present invention relates to a method of isolating target compounds from a liquid, which comprises at a first pH, contacting the liquid with a separation medium that exhibits surface-localised pH-responsive polymers in to adsorb the target compound via hydrophobic interactions; and adding an eluent, which is of a second pH and provides a conformational change of said pH-responsive polymers to release said compounds. The elution is advantageously performed by a pH gradient and/or by a salt gradient.
    Type: Application
    Filed: March 18, 2004
    Publication date: August 24, 2006
    Inventors: James Van Alstine, Camilla Larsson, Ronnie Palmgren, Asa Rudstedt