Patents by Inventor Ashok Jain

Ashok Jain 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).

  • Process for the preparation of the insecticide imidacloprid
    Publication number: 20070197792
    Abstract: A process for the preparation of the insecticide imidacloprid includes the reaction of 2-chloro-5-chloromethyl pyridine with 2-nitroiminoimidazolidine, carried out in the molar ratio of 1:1 to 1:1.2, in the presence of an alkali metal hydroxide in an aprotic solvent at 45 to 60° C. under stirring.
    Type: Application
    Filed: February 7, 2006
    Publication date: August 23, 2007
    Applicant: EXCEL CROP CARE LIMITED
    Inventors: Dipesh Shroff, Ashok Jain, Rajendra Chaudhari, Raghuvirsinh Jadeja, Mahendrasinh Gohil
  • Ethylene glycol esters as photoactive agents
    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
  • Ethylene glycol esters as photoactive agents
    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
  • Ethylene glycol esters as photoactive agents
    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
  • Ethylene glycol esters as photoactive agents
    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
  • Ethylene glycol esters as photoactive agents
    Patent number: 6153639
    Abstract: New compounds useful in photodynamic therapy are of the formula ##STR1## and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereofwherein each R.sup.1 is independently alkyl (1-6C);each n is independently an integer of 0-6; andR.sup.2 is vinyl or a derivative form thereof.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: November 28, 2000
    Assignees: QLT PhotoTherapeutices 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
  • Ethylene glycol esters as photoactive agents
    Patent number: 5929105
    Abstract: New compounds useful in photodynamic therapy are of the formula ##STR1## and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereofwherein each R.sup.1 is independently alkyl (1-6C);each n is independently an integer of 0-6; andR.sup.2 is vinyl or a derivative form thereof.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: July 27, 1999
    Assignees: QLTPhoto Therapeutics, Inc., The University of British Columbia
    Inventors: Ethan Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain