Patents by Inventor Christine Allen

Christine Allen 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: 11905377
    Abstract: The present disclosure relates to controlling drug release in cross-linked poly(valerolactone) based matrices. In one aspect, the compounds or pharmaceutically acceptable salts thereof include a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol (PEG) copolymer. In some embodiments, at least a portion of allylvalerolactone residues within the copolymer are crosslinked with a crosslinker. In some embodiments, the compound has a polydispersity index of less than or equal to 1.5. In one aspect, a method is described herein, comprising: (a) polymerizing valerolactone residues, allylvalerolactone, and polyethylene glycol residues in the presence of a non-metal catalyst via a ring opening polymerization to produce a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer; (b) crosslinking the poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer with a crosslinker; and (c) loading a drug into the crosslinked copolymer.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: February 20, 2024
    Assignees: Pendant Biosciences, Inc., The Governing Council of the University of Toronto
    Inventors: Timothy Tordella Ruckh, Carl Eric Elmquist, David Michael Stevens, Frantz Le Dévédec, Hilary Boucher, Christine Allen
  • Publication number: 20230190664
    Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.
    Type: Application
    Filed: July 22, 2022
    Publication date: June 22, 2023
    Inventors: Frantz LE DEVEDEC, Christine ALLEN, David M. STEVENS, Dean James RAGER-AGUIAR, Timothy Tordella RUCKH, Carl Eric ELMQUIST
  • Patent number: 11607454
    Abstract: Devices, materials, compounds, systems, and processes for Cherenkov-Activated Nuclear-Targeted Photodynamic Therapy that involves generating Cherenkov light within the tissue of a target volume and using this light to activate photosensitizing material that is located in the nucleus of cells of the target volume.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: March 21, 2023
    Assignee: UNIVERSITY HEALTH NETWORK
    Inventors: Brian Wilson, Christine Allen
  • Patent number: 11426356
    Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: August 30, 2022
    Assignees: Pendant Biosciences, Inc., The Governing Council of the University of Toronto
    Inventors: Frantz Le Devedec, Christine Allen, David M. Stevens, Dean James Rager-Aguiar, Timothy Tordella Ruckh, Carl Eric Elmquist
  • Patent number: 11077214
    Abstract: The present application relates to compositions comprising an iodinated contrast agent and indocyanine green co-encapsulated inside a liposomal carrier, various uses thereof as well as methods for their preparation.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: August 3, 2021
    Assignee: University Health Network
    Inventors: Jinzi Zheng, David A. Jaffray, Christine Allen
  • Publication number: 20200407514
    Abstract: The present disclosure relates to controlling drug release in cross-linked poly(valerolactone) based matrices. In one aspect, the compounds or pharmaceutically acceptable salts thereof include a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol (PEG) copolymer. In some embodiments, at least a portion of allylvalerolactone residues within the copolymer are crosslinked with a crosslinker. In some embodiments, the compound has a polydispersity index of less than or equal to 1.5. In one aspect, a method is described herein, comprising: (a) polymerizing valerolactone residues, allylvalerolactone, and polyethylene glycol residues in the presence of a non-metal catalyst via a ring opening polymerization to produce a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer; (b) crosslinking the poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer with a crosslinker; and (c) loading a drug into the crosslinked copolymer.
    Type: Application
    Filed: January 17, 2020
    Publication date: December 31, 2020
    Inventors: Timothy Tordella Ruckh, Carl Eric Elmquist, David Michael Stevens, Frantz Le Dévédec, Hilary Boucher, Christine Allen
  • Publication number: 20200316200
    Abstract: Devices, materials, compounds, systems, and processes for Cherenkov-Activated Nuclear-Targeted Photodynamic Therapy that involves generating Cherenkov light within the tissue of a target volume and using this light to activate photosensitizing material that is located in the nucleus of cells of the target volume.
    Type: Application
    Filed: May 19, 2017
    Publication date: October 8, 2020
    Applicants: UNIVERSITY HEALTH NETWORK, THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
    Inventors: Brian WILSON, Christine ALLEN
  • Publication number: 20190262274
    Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Inventors: Frantz Le Devedec, Christine Allen, David M. Stevens, Dean James Rager-Aguiar, Timothy Tordella Ruckh, Carl Eric Elmquist
  • Patent number: 9393326
    Abstract: There is provided signal modifying compositions for medical imaging comprising a carrier and signal modifying agents specific for two or more imaging modalities. The compositions are characterized by retention efficiency, with respect of the signal modifying agents that enables prolonged contrast imaging without significant depletion of the signal modifying agent from the carrier. The carriers of the present invention are lipid based or polymer based the physico-chemical properties of which can be modified to entrap or chelate different signal modifying agents and mixtures thereof and to target specific organs or tumors or tissues within a mammal.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: July 19, 2016
    Assignee: University Health Network
    Inventors: David Jaffray, Christine Allen, Jinzi Zheng, Raymond Matthew Reilly, Gregory Jason Perkins
  • Publication number: 20160095944
    Abstract: The present application relates to compositions comprising an iodinated contrast agent and indocyanine green co-encapsulated inside a liposomal carrier, various uses thereof as well as methods for their preparation.
    Type: Application
    Filed: May 26, 2014
    Publication date: April 7, 2016
    Applicant: University Health Network
    Inventors: Jinzi Zheng, David A. Jaffray, Christine Allen
  • Patent number: 9269529
    Abstract: A method for performing DA (Dynamic Alignment) beam calibration in a plasma processing system is provided. The method including acquiring a positional difference, the positional difference is acquired using an optical imaging approach. The optical imaging approach comprising of positioning the wafer on the end effector, taking a still image of the wafer on the end effector, processing the still image to ascertain the center of the wafer and an end effector-defined center defined by the end effector, and determining the positional difference between the center of the wafer and the end effector-defined center defined by the end effector. The method also includes centering a wafer with respect to an end effector by compensating for a positional difference between the wafer and the end effector with robot movement compensation. The method including moving the wafer and the end effector through DA beams associated with a plasma processing module.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: February 23, 2016
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Matt Rodnick, Christine Allen-Blanchette
  • Patent number: 8954287
    Abstract: A method for calibrating alignment of an end effector with respect to a chuck in a plasma processing system is disclosed. The method includes providing a first light beam from the end effector to said chuck, moving the end effector along a predefined calibration path such that the first light beam traverses a surface of the chuck, receiving a set of reflected light signals being generated at least when the surface reflects the first light beam during the moving, and analyzing the set of reflected light signals to identify three or more discontinuities, generated when the first light beam encounters an edge of the chuck. The method also includes determining three or more coordinate data points representing three or more points on the edge of the chuck, and determining a center of the chuck based on the three or more coordinate data points.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: February 10, 2015
    Assignee: Lam Research Corporation
    Inventors: Matt Rodnick, Christine Allen-Blanchette
  • Patent number: 8860955
    Abstract: A method for determining positions and offsets in a plasma processing system, the plasma processing system including at least a chuck and an upper electrode is provided. The method including moving a traversing assembly along a first plurality of paths to generate a first plurality of data sets, the traversing assembly including at least a light source, the light source providing a light beam, moving the traversing assembly along each path of the first plurality of paths causing the light beam to traverse the chuck and resulting in one or more data sets of the first plurality of data sets. The method also including receiving the first plurality of data sets and analyzing the first plurality of data sets to identify a first set of at least three discontinuities, wherein the first set of at least three discontinuities are related to three or more reflected light signals generated when the light beam encounters an edge of the chuck.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 14, 2014
    Assignee: Lam Research Corporation
    Inventors: Matt Rodnick, Christine Allen-Blanchette
  • Publication number: 20140193330
    Abstract: There is provided signal modifying compositions for medical imaging comprising a carrier and signal modifying agents specific for two or more imaging modalities. The compositions are characterized by retention efficiency, with respect of the signal modifying agents that enables prolonged contrast imaging without significant depletion of the signal modifying agent from the carrier. The carriers of the present invention are lipid based or polymer based the physico-chemical properties of which can be modified to entrap or chelate different signal modifying agents and mixtures thereof and to target specific organs or tumors or tissues within a mammal.
    Type: Application
    Filed: March 12, 2014
    Publication date: July 10, 2014
    Applicant: University Health Network
    Inventors: David JAFFRAY, Christine ALLEN, Jinzi ZHENG, Raymond Matthew REILLY, Gregory Jason PERKINS
  • Patent number: 8751047
    Abstract: A method for calibrating alignment of an end effector with respect to a chuck in a plasma processing system is provided. The method including positioning the end effector over the chuck and taking a still image of the chuck and the end effector. The method including processing the still image to ascertain the center of the chuck and the end effector-defined center defined by the end effector. The method including determining a positional difference between the end effector-defined center and the center of the chuck. The method also including providing the positional difference to a robot controller to control a robot mechanism to adjust the positional difference when the end effector transports a wafer.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: June 10, 2014
    Assignee: Lam Research Corporation
    Inventors: Matt Rodnick, Christine Allen-Blanchette
  • Patent number: 8703097
    Abstract: Provided are signal modifying compositions for medical imaging comprising a carrier and two or more signal modifying agents specific for two or more imaging modalities. The compositions are characterized by retention efficiency, with respect to the signal modifying agents, which enables prolonged contrast imaging without significant depletion of the signal modifying agents from the carrier. The carriers of the present invention are lipid based or polymer based, the physico-chemical properties of which can be modified to entrap or chelate different signal modifying agents and mixtures thereof and to target specific organs or tumors or tissues within a mammal.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: April 22, 2014
    Assignee: University Health Network
    Inventors: David Jaffray, Christine Allen, Jinzi Zheng, Raymond Matthew Reilly, Gregory Jason Perkins
  • Publication number: 20130261371
    Abstract: Imageable disruptable capsules containing a sensitizing agent or a protecting agent are used to enhance radiation therapy. Said capsules may be imaged by a non-invasive imaging modality, allowing for the determination of the precise timing to disrupt the capsule and release the sensitizing agent or protecting agent using an external energy source. This controlled and timed release of the sensitizing agent or protecting agent provides for enhanced radiation therapy by optimizing the delivery of the sensitizing agent or protecting agent to the target tissues. Systems comprising non-invasive imaging modalities, external energy sources and radiation energy sources are also taught for use with these imageable disruptable capsules.
    Type: Application
    Filed: May 3, 2011
    Publication date: October 3, 2013
    Applicant: UNIVERSITY HEALTH NETWORK
    Inventors: David A. Jaffray, Christine Allen, Devika Chithrani, Jinzi Zheng, Justin Grant
  • Patent number: 7901707
    Abstract: Formulations or delivery systems are provided for controlled release of therapeutically active agents. The delivery systems are composed of polymer and lipid materials and may be prepared as a gel, paste, solution, film, implant or barrier depending on the intended application. The polymer component of the matrix is the naturally occurring biomaterial, chitosan, or a mixture of chitin and chitosan. The lipid component may include phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidyl or a mixture thereof. The delivery system may be used for delivery of hydrophilic agents, hydrophobic agents or combinations thereof. The therapeutically active agents may be formulated within the matrix as free agents or incorporated into particles. In a preferred embodiment the agents are incorporated into polymeric particles that are dispersed throughout the matrix.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: March 8, 2011
    Inventors: Christine Allen, Justin Grant, Micheline Piquette-Miller
  • Publication number: 20100280790
    Abstract: A method for calibrating alignment of an end effector with respect to a chuck in a plasma processing system is provided. The method including providing a first light beam from the end effector to said chuck. The method including moving the end effector along a predefined calibration path such that the first light beam traverses a surface of the chuck. The method also includes receiving a set of reflected light signals, the set of reflected light signals being generated at least when the surface reflects the first light beam during the moving. The method including analyzing the set of reflected light signals to identify three or more discontinuities. The three or more discontinuities are related to three or more reflected light signals generated when the first light beam encounters an edge of the chuck.
    Type: Application
    Filed: December 19, 2008
    Publication date: November 4, 2010
    Inventors: Matt Rodnick, Christine Allen-Blanchette
  • Patent number: D993634
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: August 1, 2023
    Inventor: Christine Allen