Patents by Inventor Allan E. David

Allan E. David 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: 20190022664
    Abstract: A method of separating magnetic nanoparticles is described. The method comprises placing the magnetic nanoparticles in a periodic magnetic field. The periodic magnetic field varies between a first magnetic field strength and a second magnetic field strength that is higher than the first magnetic field strength. The nanoparticles may be superparamagnetic iron oxide nanoparticles.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 24, 2019
    Inventors: Allan E. DAVID, Barry Jay YEH
  • Publication number: 20180078507
    Abstract: Therapeutic or prophylactic compositions providing an active agent, such as an antigen or a vector that contains and expresses an antigen, encapsulated in or incorporated into a biodegradable polymeric particle are provided. The compositions can also provide an active agent that is not encapsulated in or incorporated into the biodegradable polymeric particle in order to provide an initial or prime delivery of the active agent. Particles or composites providing an active agent encapsulated by a first and second polymer are also provided, wherein polymers are distributed in a gradient from a core of the composite to a surface of the composite, and configured to provide a delayed release of the active agent by a period of 7 days to 6 months. Methods of producing composites are also provided.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 22, 2018
    Inventors: Allan E. David, Henry J. Baker, Aime K. Johnson, M. Scot Roberts, Kent R. Van Kampen, Prachi Sangle
  • Publication number: 20110054236
    Abstract: The present invention relates to functionalized magnetic nanoparticles. In particular, the present invention provides functionalized magnetic nanoparticles for research and clinical (e.g., targeted treatment) applications.
    Type: Application
    Filed: August 17, 2010
    Publication date: March 3, 2011
    Inventors: Victor C. Yang, Beata Chertok, Allan E. David
  • Publication number: 20090232899
    Abstract: A nanocomposite delivery system uses chitosan as a mucoadhesive material encapsulated in a surface modified network of colloidal nanoporous nanoparticles, such as silica, or other colloid-forming materials, especially metal oxides. Drug delivery systems may be provided by binding a drug to the chitosan/silica nanocomposite, typically by adding a drug or other active agent during in-situ gellation of colloidal silica. When the active agent is, for example, amoxicillin or other antibiotic agent, the drug delivery system may be used in the treatment of stomach ulcers, for example.
    Type: Application
    Filed: May 20, 2005
    Publication date: September 17, 2009
    Inventors: Allan E. David, Rulyun Zhang, Yoon Jeong Park, Arthur Jin-Ming Yang, Victor C. Yang