Patents by Inventor Peter Karellas

Peter Karellas 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: 10981858
    Abstract: The present invention relates to a novel dendrimer. The present invention also relates to formulations comprising the dendrimer with improved characteristics. For instance, the present invention relates to formulations comprising pesticides such as 2-(2,4-dichlorophenoxy)acetic acid with improved characteristics such as reduced crystallisation, compatibility with hard water and an extended shelf life at low temperatures.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 20, 2021
    Assignees: Priostar Pty Ltd, Dendritic Nanotechnologies, Inc.
    Inventors: Harsh Vardhan, Sarigama Rajesh, Peter Karellas
  • Publication number: 20210100910
    Abstract: A macromolecule includes i) a dendrimer comprising a core and at least one generation of building units, the outermost generation of building units having surface amino groups wherein at least two different terminal groups are covalently attached to the surface amino groups of the dendrimer, ii) a first terminal group which is a residue of a pharmaceutically active agent comprising a hydroxyl group, and iii) a second terminal group which is a pharmacokinetic modifying agent. The pharmaceutically active agent is cabazitaxel. The first terminal group is covalently attached to the surface amino group of the dendrimer through a diacid linker, the diacid linker comprising an alkyl chain interrupted by one or more oxygen, sulfur or nitrogen atoms, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 10, 2020
    Publication date: April 8, 2021
    Inventors: David Owen, Brian Devlin Kelly, Peter Karellas
  • Patent number: 10265409
    Abstract: A macromolecule includes i) a dendrimer with a core and at least one generation of lysine residue building units, the outermost generation of building units having surface amino groups, ii) a first terminal group covalently attached to a first surface amino group of a building unit, which includes a residue of docetaxel (DTX), and iii) a second terminal group covalently attached to a second surface amino group of a building unit, which includes a pharmacokinetic modifying agent. The pharmacokinetic modifying agent can be a polyethylene glycol (PEG). The first terminal group can be covalently attached to the surface amino group of the dendrimer through a diacid linker. The diacid linker can include a 2,2?-thiodiacetic acid residue. The diacid linker can form an ester bond with a hydroxyl group of the DTX and an amide bond with the surface amino group. A pharmaceutically acceptable salt of the macromolecule can be prepared.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 23, 2019
    Assignee: STARPHARMA PTY LTD
    Inventors: David Owen, Brian Devlin Kelly, Peter Karellas
  • Publication number: 20180370900
    Abstract: The present invention relates to a novel dendrimer. The present invention also relates to formulations comprising the dendrimer with improved characteristics. For instance, the present invention relates to formulations comprising pesticides such as 2-(2,4-dichlorophenoxy)acetic acid with improved characteristics such as reduced crystallisation, compatibility with hard water and an extended shelf life at low temperatures.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 27, 2018
    Inventors: Harsh Vardhan, Sarigama Rajesh, Peter Karellas
  • Publication number: 20180326081
    Abstract: A macromolecule includes i) a dendrimer comprising a core and at least one generation of building units, the outermost generation of building units having surface amino groups wherein at least two different terminal groups are covalently attached to the surface amino groups of the dendrimer, ii) a first terminal group which is a residue of a pharmaceutically active agent comprising a hydroxyl group, and iii) a second terminal group which is a pharmacokinetic modifying agent. The pharmaceutically active agent is cabazitaxel. The first terminal group is covalently attached to the surface amino group of the dendrimer through a diacid linker, the diacid linker comprising an alkyl chain interrupted by one or more oxygen, sulfur or nitrogen atoms, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 15, 2018
    Inventors: David Owen, Brian Devlin Kelly, Peter Karellas
  • Publication number: 20170354739
    Abstract: A macromolecule includes i) a dendrimer with a core and at least one generation of lysine residue building units, the outermost generation of building units having surface amino groups, ii) a first terminal group covalently attached to a first surface amino group of a building unit, which includes a residue of docetaxel (DTX), and iii) a second terminal group covalently attached to a second surface amino group of a building unit, which includes a pharmacokinetic modifying agent. The pharmacokinetic modifying agent can be a polyethylene glycol (PEG). The first terminal group can be covalently attached to the surface amino group of the dendrimer through a diacid linker. The diacid linker can include a 2,2?-thiodiacetic acid residue. The diacid linker can form an ester bond with a hydroxyl group of the DTX and an amide bond with the surface amino group. A pharmaceutically acceptable salt of the macromolecule can be prepared.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Inventors: David Owen, Brian Devlin Kelly, Peter Karellas
  • Patent number: 9744246
    Abstract: The present invention relates to a macromolecule comprising a dendrimer having surface amino groups to which at least two different terminal groups are attached including a pharmaceutically active agent and a pharmacokinetic modifying agent, the pharmaceutically active agent comprising a hydroxyl group and being attached to the surface amino group of the dendrimer through a diacid linker. Pharmaceutical compositions comprising the macromolecules and methods of treatment using the macromolecules are also described.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: August 29, 2017
    Assignee: STARPHARMA PTY LTD
    Inventors: David Owen, Brian Devlin Kelly, Peter Karellas
  • Publication number: 20140171375
    Abstract: The present invention relates to a macromolecule comprising a dendrimer having surface amino groups to which at least two different terminal groups are attached including a pharmaceutically active agent and a pharmacokinetic modifying agent, the pharmaceutically active agent comprising a hydroxyl group and being attached to the surface amino group of the dendrimer through a diacid linker. Pharmaceutical compositions comprising the macromolecules and methods of treatment using the macromolecules are also described.
    Type: Application
    Filed: June 6, 2012
    Publication date: June 19, 2014
    Applicant: STARPHARMA PTY LTD
    Inventors: David Owen, Brian Devlin Kelly, Peter Karellas
  • Patent number: 8703116
    Abstract: The present invention relates to a macromolecule having a controlled terminal group stoichiometry, the macromolecule including a surface layer, at least one subsurface layer and at least two terminal groups including: a first terminal group which is a residue of a pharmaceutically active agent, a derivative thereof or precursor therefor; and a second terminal group selected to modify the pharmacokinetics of the pharmaceutically active agent and/or macromolecule, wherein terminal group stoichiometry refers to the number and type of terminal groups.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 22, 2014
    Assignee: Starpharma Pty Limited
    Inventors: Benjamin James Boyd, Lisa Michelle Kaminskas, Christopher John Hamilton Porter, Peter Karellas, Guy Yeoman Krippner, Pasquale Razzino, Brian Devlin Kelly, Zemin Wu, Sue Pallich
  • Patent number: 8337823
    Abstract: The present invention relates to a macromolecule having a controlled terminal group stoichiometry, the macromolecule including a surface layer, at least one subsurface layer and at least two terminal groups including: a first terminal group which is a residue of a pharmaceutically active agent, a derivative thereof or precursor therefor; and a second terminal group selected to modify the pharmacokinetics of the pharmaceutically active agent and/or macromolecule, wherein terminal group stoichiometry refers to the number and type of terminal groups.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: December 25, 2012
    Assignee: Starpharma Pty Limited
    Inventors: Benjamin James Boyd, Lisa Michelle Kaminskas, Christopher John Hamilton Porter, Peter Karellas, Guy Yeoman Krippner, Brian Devlin Kelly, Zemin Wu, Pasquale Razzino, Sue Pallich
  • Patent number: 8158575
    Abstract: Use of a polylysine, polyamidoamine or polypropylenimine dendrimer having naphthyl disulphonate terminal groups as a topically applied agent in prophylaxis or treatment of sexually transmitted diseases.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: April 17, 2012
    Assignee: Starpharma Pty., Ltd
    Inventors: Barry Ross Matthews, George Holan, Peter Karellas, Scott Andrew Henderson, David Francis O'Keefe
  • Publication number: 20090324535
    Abstract: The present invention relates to a macromolecule having a controlled terminal group stoichiometry, the macromolecule including a surface layer, at least one subsurface layer and at least two terminal groups including: a first terminal group which is a residue of a pharmaceutically active agent, a derivative thereof or precursor therefor; and a second terminal group selected to modify the pharmacokinetics of the pharmaceutically active agent and/or macromolecule, wherein terminal group stoichiometry refers to the number and type of terminal groups.
    Type: Application
    Filed: May 15, 2006
    Publication date: December 31, 2009
    Applicant: Starpharma Pty Ltd
    Inventors: Benjamin James Boyd, Lisa Michelle Kaminskas, Christopher John Hamilton Porter, Peter Karellas, Guy Yeoman Krippner, Pasquale Razzino, Brian Devlin Kelly, Zemin Wu, Sue Pallich
  • Publication number: 20090269298
    Abstract: Use of a polylysine, polyamidoamine or polypropylenimine dendrimer having naphthyl disulphonate terminal groups as a topically applied agent in prophylaxis or treatment of sexually transmitted diseases.
    Type: Application
    Filed: July 6, 2009
    Publication date: October 29, 2009
    Inventors: Barry Ross MATTHEWS, George HOLAN, Peter KARELLAS, Scott Andrew HENDERSON, David Francis O'KEEFE
  • Patent number: 7589056
    Abstract: Use of a polylysine, polyamidoamine or polypropylenimine dendrimer having naphthyl disulphonate terminal groups as a topically applied agent in prophylaxis or treatment of sexually transmitted diseases.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: September 15, 2009
    Assignee: Starpharma Pty. Ltd.
    Inventors: Barry Ross Matthews, George Holan, Peter Karellas, Scott Andrew Henderson, David Francis O'Keefe
  • Publication number: 20050008611
    Abstract: Use of a polylysine, polyamidoamine or polypropylenimine dendrimer having naphthyl disulphonate terminal groups as a topically applied agent in prophylaxis or treatment of sexually transmitted diseases.
    Type: Application
    Filed: March 28, 2002
    Publication date: January 13, 2005
    Inventors: Barry Matthews, George Holan, Peter Karellas, Scott Henderson, David O'Keefe