Patents by Inventor Alexander Dongas

Alexander Dongas 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).

  • Publication number: 20210300954
    Abstract: The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II): processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.
    Type: Application
    Filed: May 21, 2021
    Publication date: September 30, 2021
    Inventors: Masad J. Damha, Matthew Hassler, Tak-Hang Chan, Mallikarjuna Reddy Nandyala, Robert Alexander Donga
  • Patent number: 11014948
    Abstract: The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II): processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 25, 2021
    Assignees: The Royal Institution for the Advancement of Learning/McGill University, Hong Kong Polytechnic University
    Inventors: Masad J. Damha, Matthew Hassler, Tak-Hang Chan, Mallikarjuna Reddy Nandyala, Robert Alexander Donga
  • Publication number: 20190062355
    Abstract: The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II): processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.
    Type: Application
    Filed: March 19, 2018
    Publication date: February 28, 2019
    Inventors: Masad J. Damha, Matthew Hassler, Tak-Hang Chan, Mallikarjuna Reddy Nandyala, Robert Alexander Donga
  • Publication number: 20190055276
    Abstract: The present invention relates to ionic liquids for use in chemical applications and capable of serving the dual function of solvent and liquid support. The ionic liquid lends itself to a method of synthesizing oligomers selected from the group consisting of oligopeptides, oligosaccharides and oligonucleotides, comprising contacting a first monomer unit with an ionic liquid at reaction conditions to provide an ionic liquid bound monomer unit; and contacting the ionic liquid bound monomer unit with at least one further monomer unit at reaction conditions to provide an ionic liquid bound oligomer comprising from 2 to 30 monomer units. The method lends itself to large scale manufacture of oligopeptides, oligosaccharides and oligonucleotides.
    Type: Application
    Filed: August 27, 2018
    Publication date: February 21, 2019
    Inventors: Tak-Hang Chan, Masad J. Damha, Weishi Miao, Robert Alexander Donga, Xun He
  • Patent number: 10059736
    Abstract: The present invention relates to ionic liquids for use in chemical applications and capable of serving the dual function of solvent and liquid support. The ionic liquid lends itself to a method of synthesizing oligomers selected from the group consisting of oligopeptides, oligosaccharides and oligonucleotides, comprising contacting a first monomer unit with an ionic liquid at reaction conditions to provide an ionic liquid bound monomer unit; and contacting the ionic liquid bound monomer unit with at least one further monomer unit at reaction conditions to provide an ionic liquid bound oligomer comprising from 2 to 30 monomer units. The method lends itself to large scale manufacture of oligopeptides, oligosaccharides and oligonucleotides.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: August 28, 2018
    Assignee: McGill University
    Inventors: Tak-Hang Chan, Masad J. Damha, Weishi Miao, Robert Alexander Donga, Xun He
  • Patent number: 9920084
    Abstract: The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II) processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: March 20, 2018
    Assignees: The Royal Institution for the Advancement of Learning/McGill University, Hong Kong Polytechnic University
    Inventors: Masad J. Damha, Matthew Hassler, Tak-Hang Chan, Mallikarjuna Reddy Nandyala, Robert Alexander Donga
  • Publication number: 20140256926
    Abstract: The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II) processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.
    Type: Application
    Filed: August 23, 2012
    Publication date: September 11, 2014
    Applicants: Hong Kong Polytechnic University, The Royal Institution for the Advancement of Learning/McGill University
    Inventors: Masad J. Damha, Matthew Hassler, Tak-Hang Chan, Mallikarjuna Reddy Nandyala, Robert Alexander Donga
  • Publication number: 20100041869
    Abstract: The present invention relates to ionic liquids for use in chemical applications and capable of serving the dual function of solvent and liquid support. The ionic liquid lends itself to a method of synthesizing oligomers selected from the group consisting of oligopeptides, oligosaccharides and oligonucleotides, comprising contacting a first monomer unit with an ionic liquid at reaction conditions to provide an ionic liquid bound monomer unit; and contacting the ionic liquid bound monomer unit with at least one further monomer unit at reaction conditions to provide an ionic liquid bound oligomer comprising from 2 to 30 monomer units. The method lends itself to large scale manufacture of oligopeptides, oligosaccharides and oligonucleotides.
    Type: Application
    Filed: March 15, 2006
    Publication date: February 18, 2010
    Applicant: McGill University
    Inventors: Tak-Hang Chan, Masad J. Damha, Weishi Miao, Robert Alexander Donga, Xun He
  • Patent number: 4865236
    Abstract: A clothing hanger formed of a synthetic plastic material and comprising a body portion adapted to support articles of clothing and a hook portion by which the hanger may be supported. The body portion comprises a pair of arms each of which has a cross sectional configuration having a non-central neutral axis. Each arm includes a pair of, spaced apart, first webs positioned on the neutral axis, a second web displaced on one side of the neutral axis, a pair of connecting webs one of which connects the second web with each of the first webs extending from each end of the second web towards and through the neutral axis, and flanges extending transversely of the first webs on both sides of the neutral axis. The hangers according to the invention are lighter and stronger than prior art hangers and may be produced more rapidly than such prior art hangers.
    Type: Grant
    Filed: January 12, 1988
    Date of Patent: September 12, 1989
    Assignee: Pro Plast Pty. Limited
    Inventor: Alexander Dongas
  • Patent number: D334480
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: April 6, 1993
    Assignee: Pro-Plast Pty. Limited
    Inventor: Alexander Dongas