Patents by Inventor John Fourkas

John Fourkas 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: 20240156505
    Abstract: A cryogenic needle of a cryogenic system is coupled to a heater. While the needle is inserted into target tissue beneath skin, the heater provides heat to protect the skin. Power supplied to the heater is used to interpolate performance of the needle and/or operating parameters of the cryogenic system.
    Type: Application
    Filed: November 15, 2023
    Publication date: May 16, 2024
    Applicant: Pacira CryoTech, Inc.
    Inventors: Michael Fourkas, Ronald Williams, John Allison, Jesse Rosen
  • Publication number: 20060057497
    Abstract: A three dimensional optical data storage and retrieval system that includes a three dimensional optical data storage medium and an apparatus for providing access to data stored on the medium. The data storage medium includes an optical data storage material which either a low molecular weight or polymeric glassy solid that are capable of undergoing multi-photon excitation that are energetically different in the write and read cycles. The optical data storage materials provide substantially higher storage capacities relative to conventional materials, and show high robustness in that written and stored data can undergo multiple read cycles without erasure or overwriting. An apparatus for data recording and accessing stored data on the medium includes a controllable variable energy photo-emitting excitation source and an emission photo-detector.
    Type: Application
    Filed: November 8, 2005
    Publication date: March 16, 2006
    Inventors: John Fourkas, Christopher Olson, Michael Previte
  • Publication number: 20050272598
    Abstract: Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.
    Type: Application
    Filed: July 11, 2005
    Publication date: December 8, 2005
    Inventors: Amir Hoveyda, Jason Kingsbury, Steven Garber, Brian Gray, John Fourkas
  • Patent number: 6958216
    Abstract: A class of biological sensing devices that include a substrate comprising an array of carbon nanotubes (CNTs) to which are chemically attached biological molecules is disclosed. The attached biological molecules are capable of electrical conductivity that is responsive to chemical changes occurring as a result of their interaction with target species. A means for means for using DNA as a material of potential in molecular electronic sensor devices, being primarily based on molecular electron-transfer reaction processes between DNA-binding donors and acceptors is also disclosed, including composition, method of manufacture and their use are described.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: October 25, 2005
    Assignee: The Trustees of Boston College
    Inventors: Shana O. Kelley, John Fourkas, Michael Naughton, Zhifeng Ren
  • Publication number: 20020172963
    Abstract: A class of biological sensing devices that include a substrate comprising an array of carbon nanotubes (CNTs) to which are chemically attached biological molecules is disclosed. The attached biological molecules are capable of electrical conductivity that is responsive to chemical changes occurring as a result of their interaction with target species. A means for means for using DNA as a material of potential in molecular electronic sensor devices, being primarily based on molecular electron-transfer reaction processes between DNA-binding donors and acceptors is also disclosed, including composition, method of manufacture and their use are described.
    Type: Application
    Filed: January 9, 2002
    Publication date: November 21, 2002
    Inventors: Shana O. Kelley, John Fourkas, Michael Naughton, Zhifeng Ren
  • Publication number: 20020093632
    Abstract: The present invention relates to novel three-dimensional fabrication using entangled-photon lithography. The systems include a source of light that produces twin or multiply entangled photons. The systems also include optical components that direct the twin or multiply entangled photons towards an interaction region. The interaction region includes absorption means responsive to a particular range of energies, which approximately equals the sum of the energies of the entangled photons. The systems may further include fabrication means in the interaction region that are responsive to physical and/or chemical changes of material or materials in this region, including the deposition or addition of one or more species, the removal of one or more species, the combination of two or more species, and/or the conversion of one species to another.
    Type: Application
    Filed: August 25, 2001
    Publication date: July 18, 2002
    Inventors: Malvin C. Teich, Bahaa E.A. Saleh, Alexander V. Sergienko, John Fourkas