Patents by Inventor John Hemperly

John Hemperly 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).

  • Publication number: 20070092861
    Abstract: Surfaces useful for cell culture comprise a support to which is bound a CAR material, and, bound to the CAR material, an ECM protein, or a biologically active fragment or variant thereof such as elastin, fibronectin, vitronectin, lamninin, collagen I, collagen III, collagen IV, and collagen VI. Also, optionally present on the surface is an active factor, preferably a polycationic polymer or a biologically active fragment or variant thereof, such as polyethyleneimine (PEI), poly-D-lysine (PDL), poly-L-lysine (PLL), poly-D-ornithine (PDO) or poly-L-ornithine (PLO). This surface is used in cell culture to promote cell attachment, survival, maintenance of function, and/or proliferation of primary liver cells. The invention also relates to methods utilizing this surface, such as methods for attachment, survival, maintenance of function, and/or proliferation of cells. Further disclosed is the use of the surface in cell culture with serum-free medium.
    Type: Application
    Filed: September 10, 2004
    Publication date: April 26, 2007
    Inventors: Richard Guarino, Sharon Presnell, Andrea Liebmann-Vinson, Mohammed Heidaran, John Hemperly, Stewart Jurgensen, Ronald Laethem, Neil Robbins
  • Publication number: 20060105455
    Abstract: Surfaces useful for cell culture comprise a support to which is bound a CAR material, and, bound to the CAR material, collagen VI or a biologically active fragment or variant thereof and, optionally, one or more other ECM proteins (or fragments or variants thereof) such as elastin, fibronectin, vitronectin, tenascin, laminin, entactin, aggrecan, decorin, collagen I, collagen III, and collagen IV. Also, optionally present on the surface is one or more polycationic polymers, such as poly-D-lysine or poly-D-ornithine. This surface is used in cell culture to promote cell attachment, survival, and/or proliferation of a number of different cell types such as (a) liver cells (e.g., HepG2 tumor cells, and a newly discovered line of rat liver epithelial stem cells) (b) osteoblasts, such as the murine cell line MC3T3 cell line and (c) primary bone marrow cells. Kits comprising the surfaces and additional reagents are also disclosed.
    Type: Application
    Filed: December 30, 2005
    Publication date: May 18, 2006
    Applicant: Becton Dickinson and Company
    Inventors: Richard Guarino, Jonathan Rowley, Andrea Liebmann-Vinson, John Hemperly, Mohammad Heidaran, Sharon Presnell
  • Publication number: 20050058687
    Abstract: Surfaces useful for cell culture comprise a support to which is bound a CAR material, and, bound to the CAR material, collagen VI or a biologically active fragment or variant thereof and, optionally, one or more other ECM proteins (or fragments or variants thereof) such as elastin, fibronectin, vitronectin, tenascin, laminin, entactin, aggrecan, decorin, collagen I, collagen III, and collagen IV. Also, optionally present on the surface is one or more polycationic polymers, such as poly-D-lysine or poly-D-ornithine. This surface is used in cell culture to promote cell attachment, survival, and/or proliferation of a number of different cell types such as (a) liver cells (e.g., HepG2 tumor cells, and a newly discovered line of rat liver epithelial stem cells) (b) osteoblasts, such as the murine cell line MC3T3 cell line and (c) primary bone marrow cells. Kits comprising the surfaces and additional reagents are also disclosed.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 17, 2005
    Applicant: Becton, Dickinson and Company
    Inventors: Richard Guarino, Jonathan Rowley, Andrea Liebmann-Vinson, John Hemperly, Mohammad Heidaran, Sharon Presnell
  • Publication number: 20050037512
    Abstract: The present invention relates to compositions comprising a core and a hydrophobic coating material surrounding the core. The core comprises at least one oxygen-sensing particle. The present invention also relates to methods of detecting and monitoring oxygen in a sample using the microencapsulated oxygen-sensing particles.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 17, 2005
    Inventors: Ming-Hsiung Yeh, Jon Rowley, John Hemperly, Steven Keith, Mohammad Heidaran
  • Publication number: 20050019781
    Abstract: The current invention relates to methods for diagnosing and monitoring the progression of a dementia-related neurodegenerative disease in a patient suspected of having such a disease by determining the levels of at least one cell adhesion molecule.
    Type: Application
    Filed: August 22, 2003
    Publication date: January 27, 2005
    Inventors: Carsten Buhmann, John Hemperly, Ralf Kleene, Melitta Schachner, Helen Strekalova, Tomas Muller-Thomsen