Patents by Inventor Patrick Cameron Lewis

Patrick Cameron Lewis 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).

  • Method of producing polymeric particles with selected size, shape, morphology and composition
    Patent number: 8696952
    Abstract: The present invention provides a method and apparatus for producing polymeric particles with pre-designed size, shape, morphology and composition, and more particularly the present invention uses a microfluidic polymerization reactor for producing same. The present invention disclosed herein provides a process for producing polymer particles with pre-selected shapes. The method includes injecting a first fluid comprising a polymerizable constituent with a controlled flow rate into a microfluidic channel and injecting a second fluid with a controlled flow rate into the microfluidic channel in which the second fluid mixes with the first fluid, the second fluid being immiscible with the first fluid so that the first fluid forms into droplets in the microfluidic channel. The microfluidic channel has pre-selected dimensions to give droplets of pre-selected size, morphology and shape.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: April 15, 2014
    Inventors: Eugenia Kumacheva, Shengqing Xu, Zhihong Nie, Min Seok Seo, Patrick Cameron Lewis, Hong Zhang
  • Method of Producing Polymeric Particles With Selected Size, Shape, Morphology and Composition
    Publication number: 20110129941
    Abstract: The present invention provides a method and apparatus for producing polymeric particles with pre-designed size, shape, morphology and composition, and more particularly the present invention uses a microfluidic polymerization reactor for producing same. The present invention disclosed herein provides a process for producing polymer particles with pre-selected shapes. The method includes injecting a first fluid comprising a polymerizable constituent with a controlled flow rate into a microfluidic channel and injecting a second fluid with a controlled flow rate into the microfluidic channel in which the second fluid mixes with the first fluid, the second fluid being immiscible with the first fluid so that the first fluid forms into droplets in the microfluidic channel. The microfluidic channel has pre-selected dimensions to give droplets of pre-selected size, morphology and shape.
    Type: Application
    Filed: April 25, 2005
    Publication date: June 2, 2011
    Inventors: Eugenia Kumacheva, Shengqing Xu, Zhihong Nie, Min Seok Seo, Patrick Cameron Lewis, Hong Zhang