Patents by Inventor Gaylen M. Zentner

Gaylen M. Zentner 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: 9265836
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: February 23, 2016
    Assignee: Protherics Salt Lake City, Inc.
    Inventors: Chung Shih, Gaylen M. Zentner
  • Publication number: 20140113975
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: PROTHERICS SALT LAKE CITY, INC.
    Inventors: Chung SHIH, Gaylen M. ZENTNER
  • Patent number: 8653139
    Abstract: The invention relates to drug substance preparations, pharmaceutical compositions and dosage forms containing (R)-(?)-2-(2-fluoro-4-biphenylyl) propionic acid as the active pharmaceutical ingredient, and limited amounts of specific product-related and process-related impurities.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: February 18, 2014
    Assignee: Aesica Pharmaceuticals Limited
    Inventors: Gaylen M. Zentner, James C. McRea, Mark S. Williams, Stephen J. Martin, Norman T. Smith, Catriona A. Oare
  • Patent number: 8642666
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: February 4, 2014
    Assignee: Protherics Salt Lake City, Inc.
    Inventors: Chung Shih, Gaylen M. Zentner
  • Publication number: 20120277257
    Abstract: Disclosed herein are methods of treating diseases and disorders responsive to inhibition of Hsp90, pharmaceutical compositions, pharmaceutical dosage forms and medicaments useful for the treatment of diseases responsive to inhibition of Hsp90, and methods of making the pharmaceutical compositions, pharmaceutical dosage forms and medicaments.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 1, 2012
    Applicant: MYREXIS, INC.
    Inventors: Margaret YU, Daniel A. WETTSTEIN, Vijay R. BAICHWAL, Damon I. PAPAC, Gaylen M. ZENTNER, Mark S. WILLIAMS
  • Publication number: 20110111025
    Abstract: The invention relates to high drug load formulations containing (R)-2-(2-fluoro-4-biphenylyl)propionic acid as an active pharmaceutical ingredient.
    Type: Application
    Filed: April 30, 2010
    Publication date: May 12, 2011
    Applicant: Myriad Pharmaceuticals, Inc.
    Inventors: Gaylen M. Zentner, James C. McRea, Mark S. Williams, Gregory T. Oerhtman, Tracy Annette Powers
  • Publication number: 20100087538
    Abstract: The invention relates to drug substance preparations, pharmaceutical compositions and dosage forms containing (R)-(?)-2-(2-fluoro-4-biphenylyl) propionic acid as the active pharmaceutical ingredient, and limited amounts of specific product-related and process-related impurities.
    Type: Application
    Filed: July 31, 2009
    Publication date: April 8, 2010
    Applicant: Myriad Pharmaceuticals, Incorporated
    Inventors: Gaylen M. Zentner, James C. McRea, Mark S. Williams, Stephen J. Martin, Norman T. Smith, Catriona A. Oare
  • Publication number: 20100076067
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Application
    Filed: November 30, 2009
    Publication date: March 25, 2010
    Inventors: Chung Shih, Gaylen M. Zentner
  • Patent number: 7649023
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 19, 2010
    Assignee: Novartis AG
    Inventors: Chung Shih, Gaylen M. Zentner
  • Publication number: 20090264537
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Application
    Filed: June 24, 2009
    Publication date: October 22, 2009
    Applicant: Protherics Salt Lake City, Inc.
    Inventors: Chung Shih, Gaylen M. Zentner
  • Publication number: 20090069350
    Abstract: The present invention relates to pharmaceutical compositions and dosage compositions of compounds, including injectable formulations for the parenteral delivery of such compounds into patients in need of such treatment. Also featured are methods of making and using the compositions, including methods for the treatment of neoplastic diseases.
    Type: Application
    Filed: November 17, 2008
    Publication date: March 12, 2009
    Applicant: Myriad Genetics, Incorporated
    Inventors: Gaylen M. Zentner, Chung Shih, James C. McRea
  • Publication number: 20090048346
    Abstract: The present invention features pharmaceutical compositions that improve the bioavailability of hydrophobic pharmaceutical agents that induce apoptosis in mammalian cells. Also featured are injectable formulations for the parenteral delivery of such hydrophobic pharmaceutical agents into patients in need of such treatment, as well as methods of making and using both the compositions and formulations, including methods for the treatment of cell proliferation or hyperproliferative diseases and disorders.
    Type: Application
    Filed: November 30, 2005
    Publication date: February 19, 2009
    Applicant: Myriad Genetics, Incorporated
    Inventors: Gaylen M. Zentner, Chung Shih
  • Patent number: 7182957
    Abstract: A polymer blend is prepared by dissolving chitosan and a second polymer in an acidic aqueous solution to form an aqueous polymer blend, dehydrating said aqueous polymer blend, and recovering said polymer blend. The second polymer may be selected from the group consisting of polyether glycols including polyethylene glycols; cellulose esters including cellulose acetate; poloxamers; polysaccharides including dextran and guar; polyvinylpyrrolidones; polyvinyl alcohols; and mixtures or copolymers thereof. These polymer blends swell in an acidic environment and deswell in a more neutral or basic environment. This technology is valuable for the dispensing of biologically active material or drugs into a surrounding environment, especially the environment as is found in the gastrointestinal tract.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: February 27, 2007
    Assignee: Macromed, Inc.
    Inventors: Gaylen M. Zentner, Jong-Seok Bark, Feng Liu
  • Patent number: 6730327
    Abstract: A polymer blend is prepared by dissolving chitosan and a second polymer in an acidic aqueous solution to form an aqueous polymer blend, dehydrating said aqueous polymer blend, and recovering said polymer blend. The second polymer may be selected from the group consisting of polyether glycols including polyethylene glycols; cellulose esters including cellulose acetate; poloxamers; polysaccharides including dextran and guar; polyvinylpyrrolidones; polyvinyl alcohols; and mixtures or copolymers thereof. These polymer blends swell in an acidic environment and deswell in a more neutral or basic environment. This technology is valuable for the dispensing of biologically active material or drugs into a surrounding environment, especially the environment as is found in the gastrointestinal tract.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 4, 2004
    Assignee: MacroMed, Inc.
    Inventors: Gaylen M. Zentner, Jong-Seok Bark, Feng Liu
  • Publication number: 20040001872
    Abstract: An improved drug delivery composition and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative. The composition can be administered as is or after being be dissolved or rapidly reconstituted in an aqueous vehicle to afford a homogeneous solution or uniform colloidal systems.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Inventors: Chung Shih, Gaylen M. Zentner
  • Publication number: 20030228366
    Abstract: A composition having enhanced reconstitution properties and method of use is disclosed. The composition comprises one or more biodegradable block copolymer drug carriers; and a reconstitution enhancing and enabling agent comprising polyethylene glycol (PEG), a PEG derivative or a mixture of PEG and a PEG derivative; and wherein the biodegradable block copolymer drug carrier is soluble in an aqueous solution and in the liquid reconstitution enhancing and enabling agent.
    Type: Application
    Filed: June 11, 2002
    Publication date: December 11, 2003
    Inventors: Chung Shih, Gaylen M. Zentner, Ai-Zhi Piao
  • Publication number: 20030139495
    Abstract: A polymer blend is prepared by dissolving chitosan and a second polymer in an acidic aqueous solution to form an aqueous polymer blend, dehydrating said aqueous polymer blend, and recovering said polymer blend. The second polymer may be selected from the group consisting of polyether glycols including polyethylene glycols; cellulose esters including cellulose acetate; poloxamers; polysaccharides including dextran and guar; polyvinylpyrrolidones; polyvinyl alcohols; and mixtures or copolymers thereof. These polymer blends swell in an acidic environment and deswell in a more neutral or basic environment. This technology is valuable for the dispensing of biologically active material or drugs into a surrounding environment, especially the environment as is found in the gastrointestinal tract.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 24, 2003
    Inventors: Gaylen M. Zentner, Jong-Seok Bark, Feng Liu
  • Patent number: 6592899
    Abstract: Polymeric compositions having improved capability of solubilizing a drug in a hydrophilic environment to form a solution, comprising: a biodegradable polyester oligomer; and biodegradable AB-type, ABA-type, or BAB-type block copolymers are disclosed. The copolymers are comprised of about 50.1 to 65% by weight of a biodegradable, hydrophobic A polymer block comprising a biodegradable polyester, and about 35 to 49.9% by weight of a hydrophilic B polymer block comprising a polyethylene glycol (PEG), and wherein the block copolymer has a weight averaged molecular weight of between 2400 to 4999. The biodegradable polyester oligomer of said composition is within a range of 0.01% to 30% by weight of the total polymer mixture, and the content of the biodegradable AB-type, ABA-type, or BAB-type block copolymer is within a range of 70% to 99.99% by weight of the total polymer mixture.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: July 15, 2003
    Assignee: Macromed Incorporated
    Inventors: Kirk Dee Fowers, Gaylen M. Zentner, Chung Shih, Ai-Zhi Piao
  • Publication number: 20030124189
    Abstract: A polymer blend is prepared by dissolving chitosan and a second polymer in an acidic aqueous solution to form an aqueous polymer blend, dehydrating said aqueous polymer blend, and recovering said polymer blend. The second polymer may be selected from the group consisting of polyether glycols including polyethylene glycols; cellulose esters including cellulose acetate; poloxamers; polysaccharides including dextran and guar; polyvinylpyrrolidones; polyvinyl alcohols; and mixtures or copolymers thereof. These polymer blends swell in an acidic environment and deswell in a more neutral or basic environment. This technology is valuable for the dispensing of biologically active material or drugs into a surrounding environment, especially the environment as is found in the gastrointestinal tract.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 3, 2003
    Inventors: Gaylen M. Zentner, Jong-Seok Bark, Feng Liu
  • Publication number: 20030068377
    Abstract: Polymeric compositions having improved capability of solubilizing a drug in a hydrophilic environment to form a solution, comprising: a biodegradable polyester oligomer; and biodegradable AB-type, ABA-type, or BAB-type block copolymers are disclosed. The copolymers are comprised of about 50.1 to 65% by weight of a biodegradable, hydrophobic A polymer block comprising a biodegradable polyester, and about 35 to 49.9% by weight of a hydrophilic B polymer block comprising a polyethylene glycol (PEG), and wherein the block copolymer has a weight averaged molecular weight of between 2400 to 4999. The biodegradable polyester oligomer of said composition is within a range of 0.01% to 30% by weight of the total polymer mixture, and the content of the biodegradable AB-type, ABA-type, or BAB-type block copolymer is within a range of 70% to 99.99% by weight of the total polymer mixture.
    Type: Application
    Filed: October 3, 2001
    Publication date: April 10, 2003
    Applicant: Macromed, Incorporated
    Inventors: Kirk Dee Fowers, Gaylen M. Zentner, Chung Shih, Ai-Zhi Piao