Patents by Inventor Christopher P. Drew

Christopher P. Drew 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: 10087553
    Abstract: A polymer-micelle complex suitable for use as an aid to preparing fibers, particularly nanofibers, by electrospinning. The polymer-micelle complex may be designed to impart viscosity, surface tension and conductivity properties optimal for electrospinning. By incorporating the complex as a secondary ingredient, one may electrospin sparingly soluble or low molecular weight polymers. Moreover, the polymer-micelle complex can be used as a generic carrier for preparing fibers incorporating other desired materials, such as rigid or globular (hard-to-spin) polymers, enzymes, cells, viral particles and nanoparticles.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: October 2, 2018
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Ramanathan Nagarajan, Christopher P Drew, Charlene M Mello
  • Patent number: 9175422
    Abstract: A polymer-micelle complex suitable for use as an aid to preparing fibers, particularly nanofibers, by electrospinning. The polymer-micelle complex may be designed to impart viscosity, surface tension and conductivity properties optimal for electrospinning. By incorporating the complex as a secondary ingredient, one may electrospin sparingly soluble or low molecular weight polymers. Moreover, the polymer-micelle complex can be used as a generic carrier for preparing fibers incorporating other desired materials, such as rigid or globular (hard-to-spin) polymers, enzymes, cells, viral particles and nanoparticles.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: November 3, 2015
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Ramanathan Nagarajan, Christopher P. Drew, Charlene M. Mello
  • Patent number: 8365619
    Abstract: An assembly for testing the effectiveness of anti-fog coatings on eyewear lenses, the assembly comprising a chamber for receiving and retaining the eyewear, means for controlling the temperature and relative humidity in the chamber, means for providing warm moist air to the chamber, and a hazemeter for detecting and recording haze values exhibited by the lenses; and a method for evaluating effectiveness of anti-fog coatings on eyewear lenses, utilizing the assembly.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: February 5, 2013
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: David P. Ziegler, Christopher P. Drew, Michelle Markey
  • Publication number: 20090081457
    Abstract: A polymer-micelle complex suitable for use as an aid to preparing fibers, particularly nanofibers, by electrospinning. The polymer-micelle complex may be designed to impart viscosity, surface tension and conductivity properties optimal for electrospinning. By incorporating the complex as a secondary ingredient, one may electrospin sparingly soluble or low molecular weight polymers. Moreover, the polymer-micelle complex can be used as a generic carrier for preparing fibers incorporating other desired materials, such as rigid or globular (hard-to-spin) polymers, enzymes, cells, viral particles and nanoparticles.
    Type: Application
    Filed: November 5, 2007
    Publication date: March 26, 2009
    Inventors: Ramanathan Nagarajan, Christopher P. Drew, Charlene M. Mello
  • Patent number: 7448941
    Abstract: An apparatus and method to test the abrasion resistance of materials. In one embodiment, the apparatus comprises a conduit network, a primary air stream generating device to generate a primary air stream in the conduit network, a secondary air stream generating device to produce a secondary air stream in the conduit network, and a particulate handling device to deposit particulate into the conduit network so that the particulate enters the secondary air stream. The conduit network merges the secondary air stream into the primary air stream to allow the particulate to enter the primary air stream, and allow the primary air stream to blow the particulate at a test sample positioned within the conduit network.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: November 11, 2008
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Christopher P. Drew
  • Patent number: 7347768
    Abstract: An apparatus and method to test the abrasion resistance of materials. In one embodiment, the apparatus comprises a conduit network, a primary air stream generating device to generate a primary air stream in the conduit network, a secondary air stream generating device to produce a secondary air stream in the conduit network, and a particulate handling device to deposit particulate into the conduit network so that the particulate enters the secondary air stream. The conduit network merges the secondary air stream into the primary air stream to allow the particulate to enter the primary air stream, and allow the primary air stream to blow the particulate at a test sample positioned within the conduit network.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: March 25, 2008
    Assignee: United States of America as represented by the Secretary of the Army
    Inventor: Christopher P. Drew