Patents by Inventor Richard L. Dunn

Richard L. Dunn 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: 10047193
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 14, 2018
    Assignee: Tolmar Therapeutics, Inc.
    Inventor: Richard L. Dunn
  • Publication number: 20180118881
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Inventor: Richard L. Dunn
  • Patent number: 9914802
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 13, 2018
    Assignee: Tolmar Therapeutics, Inc.
    Inventor: Richard L. Dunn
  • Publication number: 20170362377
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Inventor: Richard L. Dunn
  • Publication number: 20170096524
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Inventor: Richard L. Dunn
  • Patent number: 9539333
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: January 10, 2017
    Assignee: Tolmar Therapeutics, Inc.
    Inventor: Richard L. Dunn
  • Publication number: 20160220682
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Application
    Filed: February 3, 2016
    Publication date: August 4, 2016
    Inventor: Richard L. Dunn
  • Publication number: 20160106805
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Application
    Filed: November 2, 2015
    Publication date: April 21, 2016
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Patent number: 9283282
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: March 15, 2016
    Assignee: Tolmar Therapeutics, Inc.
    Inventor: Richard L. Dunn
  • Patent number: 9254307
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: February 9, 2016
    Assignee: Tolmar Therapeutics, Inc.
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Publication number: 20150150937
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Application
    Filed: February 11, 2015
    Publication date: June 4, 2015
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Publication number: 20140357574
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Inventor: Richard L. Dunn
  • Patent number: 8840916
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: September 23, 2014
    Assignee: Tolmar Therapeutics, Inc.
    Inventor: Richard L. Dunn
  • Publication number: 20130303722
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 14, 2013
    Inventor: Richard L. Dunn
  • Patent number: 8486455
    Abstract: The present invention is directed to a flowable composition that is suitable for use as a controlled release implant. The flowable composition includes a biodegradable thermoplastic polyester that is at least substantially insoluble in aqueous medium or body fluid. The flowable composition also includes a biocompatible polar aprotic solvent. The biocompatible polar aprotic solvent is miscible to dispersible in aqueous medium or body fluid. The flowable composition also includes leuprolide acetate.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: July 16, 2013
    Assignee: Tolmar Therapeutics, Inc.
    Inventors: Richard L. Dunn, John Steven Garrett, Harish Ravivarapu, Bhagya L. Chandrashekar
  • Patent number: 8470359
    Abstract: A polymer and a method for its preparation are provided. The polymer comprises poly(lactide), poly(lactide/glycolide) or poly(lactic acid/glycolic acid) segments bonded by ester linkages to both ends of an alkanediol core unit. The polymer is for use in a controlled release formulation for a medicament, preferably leuprolide acetate. The controlled release formulation is administered to a patient as a subcutaneous depot of a flowable composition comprising the polymer, a biocompatible solvent, and the medicament. Controlled release formulations comprising the polymer release leuprolide for treatment of prostate cancer patients over periods of 3-6 months.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: June 25, 2013
    Assignee: QLT USA, Inc.
    Inventor: Richard L. Dunn
  • Patent number: 8226598
    Abstract: The present invention relates generally to medical devices for mixing, preparing and administering therapeutic compositions, and more particularly to a system comprising two syringes and a locking ring wherein two compositions are mixed between the two syringes immediately prior to administration.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: July 24, 2012
    Assignee: Tolmar Therapeutics, Inc.
    Inventors: Richard L. Dunn, Cody L. Yarborough
  • Publication number: 20120183629
    Abstract: Low viscosity biodegradable polymer solutions of a liquid biodegradable polymer and biocompatible solvent and methods of using the compositions to form a biodegradable liquid polymer implant are provided.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 19, 2012
    Applicant: DUNN RESEARCH & CONSULTING, LLC
    Inventor: Richard L. Dunn
  • Patent number: 8187640
    Abstract: Low viscosity biodegradable polymer solutions of a liquid biodegradable polymer and biocompatible solvent and methods of using the compositions to form a biodegradable liquid polymer implant are provided.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: May 29, 2012
    Assignee: Dunn Research & Consulting, LLC
    Inventor: Richard L. Dunn
  • Patent number: 8017144
    Abstract: The present invention is directed to an improved system for controlled release of a bone growth promoting compound and to a flowable composition for its formation. The flowable composition is composed of a bone growth promoting compound, a thermoplastic polymer and an organic solvent. The flowable composition is capable of forming a biodegradable and/or bioerodible microporous, solid polymer matrix. The matrix is useful as an implant in patients (humans and animals) for delivery of a bone growth promoting compound to certain tissues.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: September 13, 2011
    Assignee: Pfizer Inc.
    Inventors: Francis Dumont, Richard L. Dunn, Scott A. Jeffers, Richard W. Korsmeyer, Mei Li, Vishwas M. Paralkar, Mingxing Zhou