Patents by Inventor Ji-Xin Cheng

Ji-Xin Cheng 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: 20130337075
    Abstract: The present disclosure describes hydrophobically modified nanoparticles and polymeric nanostructures that can be utilized to for the treatment of neuronal injury or neuronal disease in an affected patient, along with methods of forming and using the nanoparticles and nanostructures. Furthermore, the nanoparticles and nanostructures are designed as “dual action” compositions to treat neuronal injury and neuronal disease via repair of damaged membrane and suppression of intracellular inflammation.
    Type: Application
    Filed: February 24, 2012
    Publication date: December 19, 2013
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventor: Ji-Xin Cheng
  • Publication number: 20130158383
    Abstract: An imaging system, including a radiation source configured to output a signal that can non-invasively and selectively cause overtone excitation of molecules based on a predetermined chemical bond, and an ultrasound detector configured to non-invasively detect an acoustic signal generated by vibrational energy caused by the selective overtone excitation of the molecules and further configured to convert the acoustic signal into an image.
    Type: Application
    Filed: August 22, 2011
    Publication date: June 20, 2013
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Ji-Xin Cheng, Han-Wei Wang, Michael Sturek
  • Publication number: 20110261349
    Abstract: A method for providing images using a multimodal nonlinear optical microscope is disclosed. The method includes providing a foundation femtosecond laser beam, generating a first femtosecond laser beam and a second femtosecond laser beam corresponding to the foundation femtosecond laser beam, combining the first femtosecond laser beam and the foundation femtosecond laser beam to generate a first combination femtosecond laser beam, and generating a coherent anti-Stokes Raman scattering (CARS) signal based on the first combination femtosecond laser beam. A multimodal nonlinear optical microscopy platform is also disclosed.
    Type: Application
    Filed: December 18, 2009
    Publication date: October 27, 2011
    Inventors: Ji-Xin Cheng, Hongtao Chen, Mikhail Slipchenko, Haifeng Wang
  • Publication number: 20080254499
    Abstract: The invention relates to a method for diagnosing a disease state mediated by pathogenic cells, said method comprising the steps of administering to a patient a composition comprising a conjugate or complex of the general formula Ab-X wherein the group Ab comprises a ligand that binds to the pathogenic cells and the group X comprises an imaging agent, and detecting the pathogenic cells that express a receptor for the ligand using mutiphoton in vivo flow cytometry.
    Type: Application
    Filed: September 22, 2006
    Publication date: October 16, 2008
    Inventors: Philip Stewart Low, Wei He, Walter Anthony Henne, Derek David Doorneweerd, Ji-Xin Cheng
  • Patent number: 6809814
    Abstract: Systems and methods are disclosed for detecting a coherent anti-Stokes Raman scattering (CARS) signal from a microscopic sample in an epi-direction. In an embodiment, the system includes at least two sources having a pump source for generating a pump field at the pump frequency, a Stoke source for generating a Stoke field at the Stoke frequency that is different from the pump frequency, optics (64) for directing the pump and Stoke beams (60) in a collinear fashion through a focusing lens (66) toward a common focal spot in a sample (70), and detector optics that images the CARS in epi-direction, which is generated by the interaction of the pump and Stoke fields (60) with the sample (70) and is collected by the same focusing lens (66), towards an epi-detector (78).
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: October 26, 2004
    Assignee: President and Fellows of Harvard College
    Inventors: Xiaoling Sunney Xie, Ji-Xin Cheng, Andreas Volkmer
  • Patent number: 6798507
    Abstract: Systems and methods are disclosed for detecting a nonlinear coherent field induced in a microscopic sample. The system includes in an embodiment, a first source for generating a first polarized electromagnetic field at a first frequency and a second source for generating a second polarized electromagnetic field at a second frequency that is different from the first frequency. The system further includes optics for combining the first polarized electromagnetic field and the second polarized electromagnetic field in a collinear fashion such that the difference in polarization angles is &phgr; wherein &phgr; is not equal to zero. The optics further direct the combined electromagnetic field toward a common focal volume. The system also includes a polarization sensitive detector for detecting a nonlinear coherent field that is generated responsive to the first and second polarized electromagnetic fields in the focal volume.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: September 28, 2004
    Assignee: President and Fellows of Harvard College
    Inventors: Xiaoling Sunney Xie, Ji-Xin Cheng
  • Publication number: 20030160955
    Abstract: Systems and methods are disclosed for detecting a coherent anti-Stokes Raman scattering (CARS) signal from a microscopic sample in an epi-direction. In an embodiment, the system includes at least two sources having a pump source for generating a pump field at the pump frequency, a Stoke source for generating a Stoke field at the Stoke frequency that is different from the pump frequency, optics (64) for directing the pump and Stoke beams (60) in a collinear fashion through a focusing lens (66) toward a common focal spot in a sample (70), and detector optics that images the CARS in epi-direction, which is generated by the interaction of the pump and Stoke fields (60) with the sample (70) and is collected by the same focusing lens (66), towards an epi-detector (78).
    Type: Application
    Filed: January 16, 2003
    Publication date: August 28, 2003
    Inventors: Xiaoliang Sunney Xie, Ji-Xin Cheng, Andreas Volkmer
  • Publication number: 20030011765
    Abstract: Systems and methods are disclosed for detecting a nonlinear coherent field induced in a microscopic sample. The system includes in an embodiment, a first source for generating a first polarized electromagnetic field at a first frequency and a second source for generating a second polarized electromagnetic field at a second frequency that is different from the first frequency. The system further includes optics for combining the first polarized electromagnetic field and the second polarized electromagnetic field in a collinear fashion such that the difference in polarization angles is &phgr; wherein &phgr; is not equal to zero. The optics further direct the combined electromagnetic field toward a common focal volume. The system also includes a polarization sensitive detector for detecting a nonlinear coherent field that is generated responsive to the first and second polarized electromagnetic fields in the focal volume.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 16, 2003
    Inventors: Xiaoliang Sunney Xie, Ji-Xin Cheng