Patents by Inventor Baojin Chu

Baojin Chu 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).

  • Polymer-based electrocaloric cooling devices
    Patent number: 8869542
    Abstract: Cooling devices (i.e., refrigerators or heat pumps) based on polymers which exhibit a temperature change upon application or removal of an electrical field or voltage, (e.g., fluoropolymers or crosslinked fluoropolymers that exhibit electrocaloric effect).
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: October 28, 2014
    Assignee: The Penn State Research Foundation
    Inventors: Qiming Zhang, Sheng-Guo Lu, Xinyu Li, Lee Gorny, Jiping Cheng, Bret P. Neese, Baojin Chu
  • Flexoelectric—piezoelectric composite based on flexoelectric charge separation
    Patent number: 8288922
    Abstract: An example flexoelectric-piezoelectric apparatus provides an electrical response to an applied force, and/or an actuation in response to an applied electric field, that originates from the flexoelectric properties of a component. For example, shaped forms within the apparatus may be configured to yield a stress gradient on application of the force, and the stress gradient induces the flexoelectric signal. A flexoelectric-piezoelectric apparatus can be substituted for a conventional piezoelectric apparatus, but does not require the use of a piezoelectric material. Instead, the response of the apparatus is due to the generation of stress gradients and/or field gradients.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: October 16, 2012
    Assignee: The Penn State Research Foundation
    Inventors: L. Eric Cross, Wenyi Zhu, Nan Li, John Y. Fu, Baojin Chu
  • FLEXOELECTRIC - PIEZOELECTRIC COMPOSITE BASED ON FLEXOELECTRIC CHARGE SEPARATION
    Publication number: 20110006641
    Abstract: An example flexoelectric-piezoelectric apparatus provides an electrical response to an applied force, and/or an actuation in response to an applied electric field, that originates from the flexoelectric properties of a component. For example, shaped forms within the apparatus may be configured to yield a stress gradient on application of the force, and the stress gradient induces the flexoelectric signal. A flexoelectric-piezoelectric apparatus can be substituted for a conventional piezoelectric apparatus, but does not require the use of a piezoelectric material. Instead, the response of the apparatus is due to the generation of stress gradients and/or field gradients.
    Type: Application
    Filed: September 3, 2010
    Publication date: January 13, 2011
    Applicant: The Penn State Research Foundation
    Inventors: L. Eric Cross, Wenyi Zhu, Nan Li, John Y. Fu, Baojin Chu
  • COMPOSITION AND METHOD
    Publication number: 20090143216
    Abstract: A composition includes a sintered mass having a plurality of cores and a grain boundary layer disposed between each of the plurality of cores. The core includes a transition metal oxide, and grain boundary layer includes a sintering additive, a grain growth inhibitor additive and a grain boundary additive.
    Type: Application
    Filed: July 18, 2008
    Publication date: June 4, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Daniel Qi Tan, Patricia Chapman Irwin, Abdelkrim Younsi, Yang Cao, Baojin Chu, Yingneng Zhou
  • High Electric Energy Density Polymer Capacitors With Fast Discharge Speed and High Efficiency Based On Unique Poly (Vinylidene Fluoride) Copolymers and Terpolymers as Dielectric Materials
    Publication number: 20090030152
    Abstract: An improved charge or energy storage device having a dielectric charge or energy storage layer including: (i) a copolymer or terpolymer selected from P(VDF-CTFE), P(VDF-CFE), P(VDF-HFP), P(VDF-CDFE), P(VDF-TrFE-CTFE), P(VDF-TrFE-CFE), P(VDF-TrFE-HFP), P(VDF-TrFE-CDFE), P(VDF-TFE-CTFE), P(VDF-TFE-CFE), P(VDF-TFE-HFP), and P(VDF-TFE-CDFE); or (ii) a polymer blend of PVDF homopolymer with a copolymer selected from P(VDF-CTFE); P(VDF-CFE); P(VDF-HFP); and P(VDF-CDFE); or (iii) a polymer blend of a PVDF homopolymer with a terpolymer selected from P(VDF-TrFE-CTFE); P(VDF-TrFE-CFE); P(VDF-TrFE-HFP); P(VDF-TrFE-CDFE); P(VDF-TFE-CTFE); P(VDF-TFE-CFE); P(VDF-TFE-HFP); and P(VDF-TFE-CDFE); or (iv) a polymer blend of copolymer selected from P(VDF-CTFE); P(VDF-CFE); P(VDF-HFP); and P(VDF-CDFE); with a terpolymer selected from P(VDF-TrFE-CTFE); P(VDF-TrFE-CFE); P(VDF-TrFE-HFP); P(VDF-TrFE-CDFE); P(VDF-TFE-CTFE); P(VDF-TFE-CFE); P(VDF-TFE-HFP); and P(VDF-TFE-CDFE).
    Type: Application
    Filed: December 18, 2006
    Publication date: January 29, 2009
    Inventors: Qiming Zhang, Baojin Chu, Xin Zhou, Yingying Lu, Qing Wang, Bret Neese