Patents by Inventor Helen M. Burt
Helen M. Burt 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).
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Publication number: 20230303817Abstract: The invention provides biocompatible polyvinyl alcohol (PVA) matrices, composed of blends of differently hydrolyzed PVAs. The PVA matrices may be formed into controlled release formulations, for example for topical drug delivery.Type: ApplicationFiled: July 20, 2021Publication date: September 28, 2023Inventors: John K. Jackson, David Plackett, Qianyu Chen, Malihesadat Poormasjedimeibod, Helen M. Burt
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Patent number: 10525131Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: GrantFiled: July 26, 2018Date of Patent: January 7, 2020Assignees: The University of British Columbia, Centre for Drug Research and DevelopmentInventors: Helen M. Burt, Donald E. Brooks, Jayachandran N. Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Publication number: 20190201528Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: ApplicationFiled: July 26, 2018Publication date: July 4, 2019Inventors: Helen M. Burt, Donald E. Brooks, Jayachandran N. Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Patent number: 10071160Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: GrantFiled: December 22, 2016Date of Patent: September 11, 2018Assignees: The University of British Columbia, Centre for Drug Research and DevelopmentInventors: Helen M. Burt, Donald E. Brooks, Jayachandran N. Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Publication number: 20170319696Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: ApplicationFiled: December 22, 2016Publication date: November 9, 2017Inventors: Helen M. Burt, Donald E. Brooks, Jayachandran N. Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Patent number: 9561278Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: GrantFiled: September 28, 2015Date of Patent: February 7, 2017Assignees: The University of British Columbia, Centre for Drug Research and DevelopmentInventors: Helen M. Burt, Donald E. Brooks, Jayachandran N. Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Publication number: 20160114040Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: ApplicationFiled: September 28, 2015Publication date: April 28, 2016Inventors: Helen M. Burt, Donald E. Brooks, Jayachandran N. Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Patent number: 8883856Abstract: Topoisomerase inhibitors are useful for the treatment of inflammatory disorders including arthritis, restenosis, surgical adhesions and other diseases. Controlled release polymeric formulations to topoisomerase inhibitors are particularly suitable for this use.Type: GrantFiled: February 28, 2001Date of Patent: November 11, 2014Inventors: John Jackson, Helen M. Burt, Stephen K. Dordunoo
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Publication number: 20130122112Abstract: Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.Type: ApplicationFiled: March 1, 2011Publication date: May 16, 2013Applicants: Centre for Drug Research and Development, The University of British ColumbiaInventors: Helen M. Burt, Donald Brooks, Jayachandran Kizhakkedathu, Richard Liggins, Dechi Guan, Lu Ye, Clement Mugabe, Alan So, Martin E. Gleave, John K. Jackson, Rajesh Kumar Kainthan
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Patent number: 8221794Abstract: The present invention provides compositions comprising an anti-angiogenic factor, and a polymeric carrier. Representative examples of anti-angiogenic factors include Anti-Invasive Factor, Retinoic acids and derivatives thereof, and paclitaxel. Also provided are methods for embolizing blood vessels, and eliminating biliary, urethral, esophageal, and tracheal/bronchial obstructions.Type: GrantFiled: March 3, 2010Date of Patent: July 17, 2012Assignee: Angiotech Pharmaceuticals, Inc.Inventors: William L. Hunter, Lindsay S. Machan, A. Larry Arsenault, Helen M. Burt, John J. Jackson, Stephen K. Dordunoo
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Patent number: 7875677Abstract: This invention provides compositions comprising a hydrophobic drug, a biocompatible micelle forming polymer, and a biocompatible low molecular weight, water-soluble polymer. Also provided are devices for injection of such compositions and for the use of such compositions to form hydrophobic drug containing micelles within the body of a patient.Type: GrantFiled: August 18, 2008Date of Patent: January 25, 2011Assignee: The University of British ColumbiaInventors: John K. Jackson, Jason Zastre, Helen M. Burt
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Publication number: 20100292314Abstract: The present invention provides compositions comprising an anti-angiogenic factor, and a polymeric carrier. Representative examples of anti-angiogenic factors include Anti-Invasive Factor, Retinoic acids and derivatives thereof, and paclitaxel. Also provided are methods for embolizing blood vessels, and eliminating biliary, urethral, esophageal, and tracheal/bronchial obstructions.Type: ApplicationFiled: June 22, 2010Publication date: November 18, 2010Applicant: ANGIOTECH PHARMACEUTICALS, INC.Inventors: William L. HUNTER, Lindsay S. Machan, A. Larry Arsenault, Helen M. Burt, John K. Jackson, Stephen K. Dordunoo
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Publication number: 20100240742Abstract: The present invention provides compositions comprising an anti-angiogenic factor, and a polymeric carrier. Representative examples of anti-angiogenic factors include Anti-Invasive Factor, Retinoic acids and derivatives thereof, and paclitaxel. Also provided are methods for embolizing blood vessels, and eliminating biliary, urethral, esophageal, and tracheal/bronchial obstructions.Type: ApplicationFiled: March 3, 2010Publication date: September 23, 2010Applicant: ANGIOTECH PHARMACEUTICALS, INC.Inventors: WILLIAM L. HUNTER, LINDSAY S. MACHAN, A. LARRY ARSENAULT, HELEN M. BURT, JOHN K. JACKSON, STEPHEN K. DORDUNOO
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Publication number: 20090105351Abstract: This invention provides compositions comprising a hydrophobic drug, a biocompatible micelle forming polymer, and a biocompatible low molecular weight, water-soluble polymer. Also provided are devices for injection of such compositions and for the use of such compositions to form hydrophobic drug containing micelles within the body of a patient.Type: ApplicationFiled: August 18, 2008Publication date: April 23, 2009Applicant: THE UNIVERSITY OF BRITISH COLUMBIAInventors: John K. Jackson, Jason Zastre, Helen M. Burt
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Publication number: 20090074830Abstract: The present invention provides compositions comprising an anti-angiogenic factor, and a polymeric carrier. Representative examples of anti-angiogenic factors include Anti-Invasive Factor, Retinoic acids and derivatives thereof, and taxol. Also provided are methods for embolizing blood vessels, and eliminating biliary, urethral, esophageal, and tracheal/bronchial obstructions.Type: ApplicationFiled: July 30, 2007Publication date: March 19, 2009Inventors: William L. HUNTER, Lindsay S. Machan, A. Larry Arsenault, Helen M. Burt, John K. Jackson, Stephen K. Dordunoo
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Publication number: 20090036517Abstract: The present invention provides compositions comprising an anti-angiogenic factor, and a polymeric carrier. Representative examples of anti-angiogenic factors include Anti-Invasive Factor, Retinoic acids and derivatives thereof, and paclitaxel. Also provided are methods for embolizing blood vessels, and eliminating biliary, urethral, esophageal, and tracheal/bronchial obstructions.Type: ApplicationFiled: April 4, 2008Publication date: February 5, 2009Applicant: ANGIOTECH PHARMACEUTICALS, INC.Inventors: William L. Hunter, Lindsay S. Machan, A. Larry Arsenault, Helen M. Burt, John K. Jackson, Stephen K. Dordunoo
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Publication number: 20080166387Abstract: The present invention provides compositions comprising an anti-angiogenic factor, and a polymeric carrier. Representative examples of anti-angiogenic factors include Anti-Invasive Factor, Retinoic acids and derivatives thereof, and taxol. Also provided are methods for embolizing blood vessels, and eliminating biliary, urethral, esophageal, and tracheal/bronchial obstructions.Type: ApplicationFiled: July 30, 2007Publication date: July 10, 2008Inventors: William L. HUNTER, Lindsay S. MACHAN, A. Larry ARSENAULT, Helen M. BURT, John K. JACKSON, Stephen K. DORDUNOO
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Patent number: 7163930Abstract: Compositions, methods and the like comprising fucans such as fucoidan to treat surgical adhesions, arthritis, and psoriasis.Type: GrantFiled: October 5, 2004Date of Patent: January 16, 2007Assignee: The University of British ColumbiaInventors: John K. Jackson, Helen M. Burt
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Publication number: 20040234472Abstract: This invention provides compositions comprising a hydrophobic drug, a biocompatible micelle forming polymer, and a biocompatible low molecular weight, water-soluble polymer. Also provided are devices for injection of such compositions and for the use of such compositions to form hydrophobic drug containing micelles within the body of a patient.Type: ApplicationFiled: May 28, 2004Publication date: November 25, 2004Inventors: John K. Jackson, Jason Zastre, Helen M. Burt
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Patent number: 6812220Abstract: Compositions, methods and the like comprising fucans such as fucoidan to treat surgical adhesions, arthritis, and psoriasis.Type: GrantFiled: August 28, 2002Date of Patent: November 2, 2004Assignee: University of British ColumbiaInventors: John K. Jackson, Helen M. Burt