Patents by Inventor David Dolphin

David Dolphin 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: 9097672
    Abstract: A system for detecting presence of an organism having an enzyme in a sample, comprising: a cartridge for containing the sample and a substrate such that the enzyme can react with the substrate to produce a biological molecule; a partitioning element mounted in a recess in a base of the cartridge, the partitioning element allowing partitioning of the biological molecule thereinto; a light source for irradiating the biological molecule partitioned into the partitioning element; and, a detector for detecting fluorescence of the biological molecule partitioned into the partitioning element, the detected fluorescence being indicative of presence of the organism in the sample; wherein the light source is in a raised cartridge mount of the system that mates with the recess in the base of the cartridge.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: August 4, 2015
    Assignees: QUEENS'S UNIVERSITY AT KINGSTON, PATHOGEN DETECTION SYSTEMS, INC.
    Inventors: R. Stephen Brown, Eric Marcotte, Doug Wilton, Peter Gallant, David Dolphin, Lee Underwood
  • Patent number: 8968715
    Abstract: The invention is generally related to the field of photodynamic therapy by use of photosensitizers and stabilized formulations of the photosensitizers. These formulations may be used to deliver a photosensitizer as a pharmaceutical, agricultural, or industrial agent. The photosensitizer containing formulations and compositions of the invention comprise one or more block copolymers. Furthermore, the invention relates to processes for the production of, and application of, said formulations and compositions as photosensitizer drug delivery systems.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: March 3, 2015
    Assignee: The University of British Columbia
    Inventors: Rubinah K. Chowdhary, David Dolphin
  • Publication number: 20130217040
    Abstract: A system for detecting presence of an organism having an enzyme in a sample, comprising: a cartridge for containing the sample and a substrate such that the enzyme can react with the substrate to produce a biological molecule; a partitioning element mounted in a recess in a base of the cartridge, the partitioning element allowing partitioning of the biological molecule thereinto; a light source for irradiating the biological molecule partitioned into the partitioning element; and, a detector for detecting fluorescence of the biological molecule partitioned into the partitioning element, the detected fluorescence being indicative of presence of the organism in the sample; wherein the light source is in a raised cartridge mount of the system that mates with the recess in the base of the cartridge.
    Type: Application
    Filed: June 17, 2011
    Publication date: August 22, 2013
    Applicants: QUEEN'S UNIVERSITY AT KINGSTON, PATHOGEN DETECTION SYSTEMS, INC.
    Inventors: R. Stephen Brown, Eric Marcotte, Doug Wilton, Peter Gallant, David Dolphin, Lee Underwood
  • Publication number: 20090203757
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl (1-6C); each n is independently an integer of 0-6; and R2 is vinyl or a derivative form thereof.
    Type: Application
    Filed: April 23, 2009
    Publication date: August 13, 2009
    Inventors: Ethan D. STERNBERG, David DOLPHIN, Julia G. LEVY, Anna M. RICHTER, David W.C. HUNT, Ashok JAIN, Elizabeth M. WATERFIELD, Ronald E. BOCH, Andrew Norman TOVEY
  • Patent number: 7282215
    Abstract: The invention is generally related to the field of formulating medicaments in association with a solid support. Such formulations comprising photosensitizers, and their use in photodynamic therapy, are also provided. Methods for the production of the medicament formulations are also disclosed.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: October 16, 2007
    Assignee: The University of British Columbia
    Inventors: Rubinah K. Chowdhary, David Dolphin
  • Publication number: 20070191329
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl(1-6C); each n is independently an integer of 0-6; and R2 is vinyl or a derivative form thereof.
    Type: Application
    Filed: September 20, 2006
    Publication date: August 16, 2007
    Applicant: QLT Inc.
    Inventors: Ethan Sternberg, David Dolphin, Julia Levy, Anna Richter, David Hunt, Ashok Jain, Elizabeth Waterfield, Ronald Boch, Andrew Tovey
  • Publication number: 20070086973
    Abstract: The invention is generally related to the field of photodynamic therapy by use of photosensitizers and stabilized formulations of the photosensitizers. These formulations may be used to deliver a photosensitizer as a pharmaceutical, agricultural, or industrial agent. The photosensitizer containing formulations and compositions of the invention comprise one or more block copolymers. Furthermore, the invention relates to processes for the production of, and application of, said formulations and compositions as photosensitizer drug delivery systems.
    Type: Application
    Filed: November 17, 2006
    Publication date: April 19, 2007
    Inventors: Rubinah Chowdhary, David Dolphin
  • Patent number: 7122569
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl (1–6C); each n is independently an integer of 0–6; and R2 is vinyl or a derivative form thereof.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: October 17, 2006
    Assignees: QLT, Inc. and, University of British Columbia
    Inventors: Ethan D. Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch, Andrew Norman Tovey
  • Patent number: 7022843
    Abstract: Improved ?,??-dihydroxy meso-substituted chlorin, bacteriochlorin or isobacteriochlorin compounds are provided as photosensitizers. Pharmaceutical compositions and photodynamic therapy comprising them are also disclosed.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: April 4, 2006
    Assignee: The University of British Columbia
    Inventors: Jill Kirsten MacAlpine, Christian Brückner, David Dolphin
  • Patent number: 6878253
    Abstract: A method for the separation of benzoporphyrin derivative mono and diacid (BPD-MA, BPD-DA) enantiomers by Laser-Induced Fluorescence Capillary Electrophoresis has been developed. The limits of detection are 2.06×10?6 M, and the relative standard deviation for the separation was 2.90% to 4.64%. The BPD enantiomers can be quantitatively determined in the range of 10?2 to 10?5 mg mL?1. In comparison with HPLC, CE has better resolution and efficiency. This separation method was successfully applied to the BPD enantiomers obtained from a matrix of bovine serum and from liposomally formulated material as well as from studies with rat, dog and human microsomes.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 12, 2005
    Assignee: The University of British Columbia
    Inventors: David Dolphin, Xuejun Peng, Ethan D. Sternberg
  • Publication number: 20050032769
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl (1-6C); each n is independently an integer of 0-6; and R2 is vinyl or a derivative form thereof.
    Type: Application
    Filed: April 14, 2004
    Publication date: February 10, 2005
    Inventors: Ethan Sternberg, David Dolphin, Julia Levy, Anna Richter, David Hunt, Ashok Jain, Elizabeth Waterfield, Ronald Boch, Andrew Tovey
  • Patent number: 6825343
    Abstract: Methods of modifying polypyrrolic macrocycles by use of a 1,3-dipolar cycloaddition is described. The methods may be used to produce compounds for further derivatization to produce photosensitizing agents of interest.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: November 30, 2004
    Assignee: University of British Columbia
    Inventors: Jill Kirsten MacAlpine, Ethan D. Sternberg, David Dolphin
  • Patent number: 6756396
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl (1-6C); each n is independently an integer of 0-6; and R2 is vinyl or a derivative form thereof.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 29, 2004
    Assignees: QLT Inc., The University of British Columbia
    Inventors: Ethan Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch
  • Publication number: 20040102430
    Abstract: The invention is generally related to the field of photodynamic therapy by use of photosensitizers and stabilized formulations of the photosensitizers. These formulations may be used to deliver a photosensitizer as a pharmaceutical, agricultural, or industrial agent. The photosensitizer containing formulations and compositions of the invention comprise one or more block copolymers. Furthermore, the invention relates to processes for the production of, and application of, said formulations and compositions as photosensitizer drug delivery systems.
    Type: Application
    Filed: October 17, 2003
    Publication date: May 27, 2004
    Inventors: Rubinah K. Chowdhary, David Dolphin
  • Patent number: 6693093
    Abstract: The invention is generally related to the field of photodynamic therapy by use of photosensitizers and stabilized formulations of the photosensitizers. These formulations may be used to deliver a photosensitizer as a pharmaceutical, agricultural, or industrial agent. The photosensitizer containing formulations and compositions of the invention comprise one or more block copolymers. Furthermore, the invention relates to processes for the production of, and application of, said formulations and compositions as photosensitizer drug delivery systems.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: February 17, 2004
    Assignee: The University of British Columbia (UBC)
    Inventors: Rubinah K. Chowdhary, David Dolphin
  • Publication number: 20040019201
    Abstract: Methods of modifying polypyrrolic macrocycles by use of a 1,3-dipolar cycloaddition is described. The methods may be used to produce compounds for further derivatization to produce photosensitizing agents of interest.
    Type: Application
    Filed: July 17, 2003
    Publication date: January 29, 2004
    Inventors: Jill Kirsten MacAlpine, Ethan D. Sternberg, David Dolphin
  • Patent number: D645221
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: September 13, 2011
    Assignees: Queen's University, Pathogen Detection Systems, Inc.
    Inventors: R. Stephen Brown, Eric Marcotte, Michelle Douma, Michael Miron, Doug Wilton, Peter Gallant, David Dolphin, Lee Underwood, David (Geoffrey) Robinson, Les Stokes, Peter Holdcroft, Matthew Miles
  • Patent number: D645772
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: September 27, 2011
    Assignees: Queen's University, Pathogen Detection Systems, Inc.
    Inventors: R. Stephen Brown, Eric Marcotte, Doug Wilton, Peter Gallant, David Dolphin, Michael Miron, Lee Underwood, David (Geoffrey) Robinson, Les Stokes, Peter Holdcroft, Matthew Brown
  • Patent number: D656287
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: March 20, 2012
    Assignees: Queen's University, Pathogen Detection Systems, Inc.
    Inventors: R. Stephen Brown, Eric Marcotte, Michelle Douma, Michael Miron, Doug Wilton, Peter Gallant, David Dolphin, Lee Underwood, David (Geoffrey) Robinson, Les Stokes, Peter Holdcroft, Matthew Miles
  • Patent number: D661701
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: June 12, 2012
    Assignee: Pathogen Detection Systems, Inc.
    Inventors: R. Stephen Brown, Eric Marcotte, Doug Wilton, Peter Gallant, David Dolphin, Tom Radcliffe, Michael Miron, Lee Underwood, Les Stokes, Peter Holdcroft, Simon Wilkinson