Patents by Inventor Kailiang Ren

Kailiang Ren 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).

  • PBLG based planar microphones
    Patent number: 9838800
    Abstract: A piezoelectric, poly (?-benzyl-?,L-glutamate) (“PBLG”) planar microphone, and method for construction thereof, are disclosed. The microphone includes at least a polyester film, a piezoelectric, hot pressed poly (?-benzyl-?,L-glutamate) (“HPPBLG”) layer, and an aluminum coating for the HPPBLG layer. The coated HPPBLG layer is coupled to the polyester film.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 5, 2017
    Assignee: The Johns Hopkins Univeristy
    Inventors: James E. West, Kailiang Ren, Michael Yu
  • Continuous piezoelectric film including polar polymer fibers
    Patent number: 9362481
    Abstract: A continuous piezoelectric film can include a plurality of fibers, each fiber including a polypeptide, wherein molecules of the polypeptide have electric dipole moments that are aligned such that the piezoelectric fiber provides a piezoelectric effect. The continuous piezoelectric film has at least one piezoelectric constant d31 or d33 that is at least 1 pC/N. The continuous piezoelectric film can be prepared hot pressing a mat of aligned piezoelectric fibers.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 7, 2016
    Assignee: The Johns Hopkins University
    Inventors: Michael Yu, Kailiang Ren, James E. West
  • PBLG BASED PLANAR MICROPHONES
    Publication number: 20150215707
    Abstract: A piezoelectric, poly (?-benzyl-?,L-glutamate) (“PBLG”) planar microphone, and method for construction thereof, are disclosed. The microphone includes at least a polyester film, a piezoelectric, hot pressed poly (?-benzyl-?,L-glutamate) (“HPPBLG”) layer, and an aluminum coating for the HPPBLG layer. The coated HPPBLG layer is coupled to the polyester film.
    Type: Application
    Filed: January 23, 2015
    Publication date: July 30, 2015
    Inventors: James E. West, Kailiang Ren, Michael Yu
  • CONTINUOUS PIEZOELECTRIC FILM INCLUDING POLAR POLYMER FIBERS
    Publication number: 20130229091
    Abstract: A continuous piezoelectric film can include a plurality of fibers, each fiber including a polypeptide, wherein molecules of the polypeptide have electric dipole moments that are aligned such that the piezoelectric fiber provides a piezoelectric effect. The continuous piezoelectric film has at least one piezoelectric constant d31 or d33 that is at least 1 pC/N. The continuous piezoelectric film can be prepared hot pressing a mat of aligned piezoelectric fibers.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 5, 2013
    Inventors: Michael Yu, Kailiang Ren, James E. West