Patents by Inventor Ritchie Chen

Ritchie Chen 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).

  • Independent magnetically-multiplexed heating of portions of a target
    Patent number: 9681979
    Abstract: A predetermined spatial locale is selectively operationally stimulated through local heating by exposing magnetic particle(s) associated with such local to alternating magnetic field parameters of which are chosen to generate hysteretic losses in magnetic particle(s). When different types of particles are associated with different locales such as different biological cells, different cells can be accessed and stimulated independently from one another. Switching between stimulation of first and second types of cells is carried out by changing parameters of stimulating magnetic field, while optionally maintaining the field strength-frequency product substantially constant. Embodiments facilitate multiplexed release of chemical payloads, triggering changes in electrical polarization, and changing a shape of a unit placed at the chosen locale.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: June 20, 2017
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Polina Olegovna Anikeeva, Ritchie Chen, Michael Gary Christiansen
  • NANOPARTICLES AND METHODS OF MAKING
    Publication number: 20170143854
    Abstract: Magnetic nanoparticles and synthesis of synthesis are described.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 25, 2017
    Applicant: Massachusetts Institute of Technology
    Inventors: Ritchie Chen, Polina Olegovna Anikeeva, Alexandra Sourakov
  • INDEPENDENT MAGNETICALLY-MULTIPLEXED HEATING OF PORTIONS OF A TARGET
    Publication number: 20150150714
    Abstract: A predetermined spatial locale is selectively operationally stimulated through local heating by exposing magnetic particle(s) associated with such local to alternating magnetic field parameters of which are chosen to generate hysteretic losses in magnetic particle(s). When different types of particles are associated with different locales such as different biological cells, different cells can be accessed and stimulated independently from one another. Switching between stimulation of first and second types of cells is carried out by changing parameters of stimulating magnetic field, while optionally maintaining the field strength-frequency product substantially constant. Embodiments facilitate multiplexed release of chemical payloads, triggering changes in electrical polarization, and changing a shape of a unit placed at the chosen locale.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 4, 2015
    Inventors: Polina Olegovna Anikeeva, Ritchie Chen, Michael Gary Christiansen