Patents by Inventor Jan Koopmans

Jan Koopmans 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).

  • Patent number: 6821779
    Abstract: The instant methods pertain to improved methods for storing neural cells, preferably dissociated neural cells, prior to their use in transplantation and to the cells obtained using such methods. One embodiment pertains to methods for storing the neural cells in medium lacking added buffer or added protein, other embodiments feature neural cells which are maintained at 4° C. prior to cryopreservation and have comparable viability and/or functionality to freshly harvest cells. In addition, methods for storing and/or transplantation of porcine neural cells are described.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: November 23, 2004
    Assignees: University Hospital Groningen, Inc., Diacrin, Inc.
    Inventors: Jan Koopmans, Douglas B. Jacoby, Jonathan Dinsmore
  • Patent number: 6713245
    Abstract: The instant methods pertain to an improved methods for storing neural cells, preferably dissociated neural cells, prior to their use in transplantation and to the cells obtained using such methods. One embodiment pertains to methods for storing the neural cells in medium lacking added buffer or added protein, other embodiments feature neural cells which are maintained at 4° C. prior to cryopreservation and have comparable viability and/or functionality to freshly harvested cells. In addition, methods for storing and/or transplantation of porcine neural cells are described.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: March 30, 2004
    Assignees: Diacrin, Inc., University Hospital Groningen
    Inventors: Jan Koopmans, Douglas B. Jacoby, Jonathan Dinsmore
  • Publication number: 20020102239
    Abstract: The instant methods pertain to an improved methods for storing neural cells, preferably dissociated neural cells, prior to their use in transplantation and to the cells obtained using such methods. One embodiment pertains to methods for storing the neural cells in medium lacking added buffer or added protein, other embodiments feature neural cells which are maintained at 4° C. prior to cryopreservation and have comparable viability and/or functionality to freshly harvested cells. In addition, methods for storing and/or transplantation of porcine neural cells are described.
    Type: Application
    Filed: July 6, 1998
    Publication date: August 1, 2002
    Inventors: JAN KOOPMANS, DOUGLAS B. JACOBY, JONATHAN DINSMORE
  • Patent number: 5620474
    Abstract: A programmable pacing system and method, the system having the capability for providing an indication of recommended replacement time (RRT) as well as a prior warning of six months to RRT. RRT is determined by storing a value in the pacemaker corresponding to battery impedance at RRT, continuously periodically measuring battery impedance, and comparing the measured value with the stored RRT value. Whenever the pacemaker is reprogrammed to different operating conditions which affect RRT, or there is a significant change in load lead resistance, a new value of RRT impedance is calculated based upon a selected formula corresponding to the reprogrammed set of operating conditions, and stored in the pacemaker. At the same time, an Aging value of impedance is re-calculated to provide a six month warning before RRT, and likewise stored in the pacemaker.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: April 15, 1997
    Assignee: Vitatron Medical, B.V.
    Inventor: Jan Koopman