Patents by Inventor Pei Yuin Keng

Pei Yuin Keng 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: 9649632
    Abstract: The present disclosure sets forth incorporating microfluidic chips interfaces for use with digital microfluidic processes. Methods and devices according to the present disclosure utilize compact, integrated platforms that interface with a chip upstream and downstream of the reaction, as well as between intermediate reaction steps if needed. In some embodiments these interfaces are automated, including automation of a multiple reagent process. Various reagent delivery systems and methods are also disclosed.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: May 16, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: R. Michael Van Dam, Gaurav Shah, Pei-Yuin Keng
  • Patent number: 9481615
    Abstract: Disclosed herein are methods of performing microchemical reactions and electro-wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: November 1, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: R. Michael Van Dam, Chang-Jin Kim, Supin Chen, Huijiang Ding, Gaurav Jitendra Shah, Pei Yuin Keng
  • Patent number: 9321866
    Abstract: The present disclosure relates to the novel multistep procedure for preparation of polymer monoliths for use in solvent exchange, such as methods to exchange and activate fluoride ions on a flow through microfluidic chip for subsequent chemical synthesis. Methods according to the present disclosure include the application of such microfluidic platforms for rapid F18 radiosynthesis on a flow through microfluidic chip with high efficiency, followed by a subsequent nucleophilic fluorination reaction. Various other methods of exchanging and activating fluoride ions on a flow through microfluidic chip are also disclosed. Methods incorporating features of the present invention can be applicable to any flow through microfluidic device in any field, such as radiosyntheses, chemical syntheses, concentration of ions for environmental analyzes and sample preparation such as concentrating minute amounts of analyte to improve the downstream detection.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: April 26, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALFIORNIA
    Inventors: Pei Yuin Keng, Rehana Ismail, Ariella Machness, Kyoung-Joo Jenny Park
  • Publication number: 20160107951
    Abstract: Disclosed herein are methods of performing microchemical reactions and electro-wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
    Type: Application
    Filed: October 9, 2015
    Publication date: April 21, 2016
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: R. Michael Van Dam, Chang-Jin Kim, Supin Chen, Huijiang Ding, Gaurav Jitendra Shah, Pei Yuin Keng
  • Patent number: 9193640
    Abstract: Disclosed herein are methods of performing microchemical reactions and electro-wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: November 24, 2015
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: R. Michael Van Dam, Chang-Jin Kim, Supin Chen, Huijiang Ding, Gaurav Jitendra Shah, Pei Yuin Keng
  • Publication number: 20150203416
    Abstract: Disclosed herein are methods of performing microchemical reactions and electro-wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
    Type: Application
    Filed: March 10, 2015
    Publication date: July 23, 2015
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: R. Michael Van Dam, Chang-Jin Kim, Supin Chen, Huijiang Ding, Gaurav Jitendra Shah, Pei Yuin Keng
  • Publication number: 20150152206
    Abstract: The present disclosure relates to the novel multistep procedure for preparation of polymer monoliths for use in solvent exchange, such as methods to exchange and activate fluoride ions on a flow through microfluidic chip for subsequent chemical synthesis. Methods according to the present disclosure include the application of such microfluidic platforms for rapid F18 radiosynthesis on a flow through microfluidic chip with high efficiency, followed by a subsequent nucleophilic fluorination reaction. Various other methods of exchanging and activating fluoride ions on a flow through microfluidic chip are also disclosed. Methods incorporating features of the present invention can be applicable to any flow through microfluidic device in any field, such as radiosyntheses, chemical syntheses, concentration of ions for environmental analyses and sample preparation such as concentrating minute amounts of analyte to improve the downstream detection.
    Type: Application
    Filed: June 11, 2013
    Publication date: June 4, 2015
    Inventors: Pei Yuin Keng, Rehana Ismail, Ariella Machness, Kyoung-Joo Jenny Park
  • Publication number: 20150148549
    Abstract: The present disclosure sets forth incorporating microfluidic chips Interfaces for use with digital microfluidic processes. Methods and devices according to the present disclosure utilize compact, integrated platforms that interface with a chip upstream and downstream of the reaction, as well as between intermediate reaction steps if needed. In some embodiments these interfaces are automated, including automation of a multiple reagent process. Various reagent delivery systems and methods are also disclosed.
    Type: Application
    Filed: June 10, 2013
    Publication date: May 28, 2015
    Inventors: R. Michael Van Dam, Gaurav Shah, Pei-Yuin Keng
  • Patent number: 9005544
    Abstract: Disclosed herein are methods of performing microchemical reactions and electro-wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 14, 2015
    Assignee: The Regents of the University of California
    Inventors: R. Michael Van Dam, Chang-Jin Kim, Supin Chen, Huijiang Ding, Gaurav Jitendra Shah, Pei Yuin Keng
  • Publication number: 20120264932
    Abstract: Disclosed herein are methods of performing microchemical reactions and electro- wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
    Type: Application
    Filed: October 15, 2010
    Publication date: October 18, 2012
    Inventors: R. Michael Van Dam, Chang-Jin Kim, Supin Chen, Huijiang Ding, Gaurav Jitendra Shah, Pei Yuin Keng
  • Publication number: 20090053512
    Abstract: A polymer coated nanoparticle containing a metallic core and a polymer shell encapsulating said metallic core is useful, for example, in magnetic tapes and supercapacitors.
    Type: Application
    Filed: March 12, 2007
    Publication date: February 26, 2009
    Applicant: THE ARIZONA BD OF REG ON BEHALF OF THE UNIV OF AZ
    Inventors: Jeffrey Pyun, Bryan Korth, Steven Bowles, Pei Yuin Keng