Patents by Inventor David Luttropp

David Luttropp 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).

  • Device for renal cell expansion
    Patent number: 9902939
    Abstract: A device for culturing, storing and expanding adherent renal cells. The device permits the adhesion and proliferation of the cells and the surface characteristics of the membrane material used in said device further permit the cellular matrix components (EMC). A method for expanding adherent renal cells and methods of using particular membranes for culturing, storing and expanding adherent renal cells. The membranes comprise a copolymer of acrylonitrile and sodium methallyl sulfonate as well as polyethylenimine.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: February 27, 2018
    Assignee: Gambro Lundia AB
    Inventors: David Luttropp, Markus Neubauer, Helmut Geiger, Juergen Bereiter-Hahn, Patrick Baer, Reinhold Deppisch, Doris Deppisch
  • Hybrid bioartificial kidney
    Patent number: 8696909
    Abstract: A bioartificial kidney equivalent and a process for producing the bioartificial kidney equivalent. The hybrid bioartificial kidney comprises human proximal and distal renal tubule cells grown on particular synthetic membranes.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: April 15, 2014
    Assignee: Gambro Lundia AB
    Inventors: David Luttropp, Bernd Krause, Markus Neubauer, Andrea Schnell, Helmut Geiger, Juergen Bereiter-Hahn, Patrick Baer, Doris Deppisch
  • DEVICE FOR RENAL CELL EXPANSION
    Publication number: 20120145626
    Abstract: A device for culturing, storing and expanding adherent renal cells. The device permits the adhesion and proliferation of the cells and the surface characteristics of the membrane material used in said device further permit the cellular matrix components (EMC). A method for expanding adherent renal cells and methods of using particular membranes for culturing, storing and expanding adherent renal cells. The membranes comprise a copolymer of acrylonitrile and sodium methallyl sulfonate as well as polyethylenimine.
    Type: Application
    Filed: September 23, 2009
    Publication date: June 14, 2012
    Applicant: GAMBRO LUNDIA AB
    Inventors: David Luttropp, Markus Neubauer, Helmut Geiger, Juergen Bereiter-Hahn, Patrick Baer, Reinhold Deppisch, Doris Deppisch
  • HYBRID BIOARTIFICIAL KIDNEY
    Publication number: 20120067815
    Abstract: A bioartificial kidney equivalent and a process for producing the bioartificial kidney equivalent. The hybrid bioartificial kidney comprises human proximal and distal renal tubule cells grown on particular synthetic membranes.
    Type: Application
    Filed: September 23, 2009
    Publication date: March 22, 2012
    Applicant: GAMBRO LUNDIA AB
    Inventors: David Luttropp, Bernd Krause, Markus Neubauer, Reinhold Deppisch, Doris Deppisch, Andrea Schnell, Helmut Geiger, Juergen Bereiter-Hahn, Patrick Baer
  • Geometrical object representation system and method for efficiently representing a geometrical object for use by a computer graphics system
    Patent number: 5982385
    Abstract: A geometrical object representation system efficiently represents primitives for a computer graphics system in order to generate a display of a desired geometrical object surface. A data list repository is configured to maintain a linked list of strip primitives received from an application program. A strip builder traverses the linked list searching for matching vertices of unmatched strips. The strip builder uses a logic manipulation to quickly exclude obvious non-matches. After finding two strips with matching vertices, strip builder joins the two strips together. This joining process creates larger strips which represent the geometrical object in a more compact and efficient form. A graphics system can use this more efficient form of data to reduce data calls and decrease run time in processing the data for rendering by a display.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: November 9, 1999
    Assignee: Hewlett-Packard Co.
    Inventors: Keith Fish, David Luttropp