Patents by Inventor Andrew K. Chojnacki

Andrew K. Chojnacki 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).

  • PLATELET DERIVED GROWTH FACTOR (PDGF)-DERIVED NEUROSPHERES DEFINE A NOVEL CLASS OF PROGENITOR CELLS
    Publication number: 20110182853
    Abstract: The present invention is related to the discovery of a novel class of neural progenitor cells, which proliferate in response to platelet derived growth factor (PDGF) and differentiate into neurons and oligodendrocytes but not astrocytes. Progeny of the progenitor cells can be obtained by culturing brain tissue in PDGF without serum, epidermal growth factor (EGF), fibroblast growth factor 2, or transforming growth factor alpha. Upon subculturing into EGF-containing media, these progeny cells can proliferate and form neurospheres, whereas PDGF has no such effect.
    Type: Application
    Filed: April 7, 2011
    Publication date: July 28, 2011
    Applicant: STEM CELL THERAPEUTICS INC.
    Inventors: Samuel Weiss, Andrew K. Chojnacki
  • Platelet derived growth factor (PDGF)-derived neurospheres define a novel class of progenitor cells
    Patent number: 7943376
    Abstract: The present invention is related to the discovery of a novel class of neural progenitor cells, which proliferate in response to platelet derived growth factor (PDGF) and differentiate into neurons and oligodendrocytes but not astrocytes. Progeny of the progenitor cells can be obtained by culturing brain tissue in PDGF without serum, epidermal growth factor (EGF), fibroblast growth factor 2, or transforming growth factor alpha. Upon subculturing into EGF-containing media, these progeny cells can proliferate and form neurospheres, whereas PDGF has no such effect.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: May 17, 2011
    Assignee: Stem Cell Therapuetics Inc.
    Inventors: Samuel Weiss, Andrew K. Chojnacki
  • Platelet derived growth factor (PDGF)-derived neurospheres define a novel class of progenitor cells
    Publication number: 20020197238
    Abstract: The present invention is related to the discovery of a novel class of neural progenitor cells, which proliferate in response to platelet derived growth factor (PDGF) and differentiate into neurons and oligodendrocytes but not astrocytes. Progeny of the progenitor cells can be obtained by culturing brain tissue in PDGF without serum, epidermal growth factor (EGF), fibroblast growth factor 2, or transforming growth factor alpha. Upon subculturing into EGF-containing media, these progeny cells can proliferate and form neurospheres, whereas PDGF has no such effect.
    Type: Application
    Filed: April 25, 2002
    Publication date: December 26, 2002
    Applicant: Neurostasis, Inc.
    Inventors: Samuel Weiss, Andrew K. Chojnacki