Patents by Inventor Virgil Percec

Virgil Percec 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: 20240252677
    Abstract: The invention relates to amphiphilic Janus dendrimers which may form nanoparticles. The invention also relates to methods of inducing an adaptive immune response in a subject comprising administering to the subject an effective amount of a composition comprising at least one nucleoside-modified RNA encoding at least one antigen and at least one amphiphilic Janus dendrimer and to methods of delivering an agent to a subject in need thereof, said method comprising the step of delivering to the subject a composition comprising an agent encapsulated by a nanoparticle.
    Type: Application
    Filed: May 24, 2022
    Publication date: August 1, 2024
    Inventors: Virgil Percec, Drew Weissman, Dapeng Zhang, Elena Atochina-Vasserman, Devendra Maurya, Qi Xiao
  • Patent number: 10273314
    Abstract: SET-LRP polymerization of acrylic monomers under acidic conditions is described. The source of the acidity may be the solvent (e.g., an acetic acid-containing solvent) or in the monomer content (e.g., acrylic acid or methacrylic acid, optionally in combination with other monomers such as methyl methacrylate).
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: April 30, 2019
    Assignees: ROHM AND HAAS COMPANY, THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
    Inventors: Antony K. Van Dyk, Susan J. Fitzwater, Sven Fleischmann, Virgil Percec
  • Patent number: 9777034
    Abstract: The invention concerns compounds of the formula (I) wherein: Y1 and Y2 are independently a monosaccharide or disaccharide; X1 and X2 are independently —(R9—O)m—, —(R10)p—, —O—(R11—O)q—, —R16—O—R17—O— or a covalent bond; Q1 and Q2 are independently a nitrogen-containing heterocycle moiety; Z1 and Z2 are independently —(O—R7)—, —(O—C(?O)—R8)a-, —O—C(?O)—R12—C(=0)-R13—, —O—C(?O)—R14—C(?O)—R15 or a covalent bond; R7-R17 are each independently C1-C6 alkyl; R1-R6 are each independently a linear or branched alkyl group; b, c, d, e, f, and g are 0 or 1, provided b+c+d equals at least 2 and e+f+g equals at least 2; and a, m, p, and q are each an integer from 1-6.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: October 3, 2017
    Assignee: The Trustees of the University of Pennsylvania
    Inventor: Virgil Percec
  • Patent number: 9623046
    Abstract: The invention concerns compounds of the formula: X—(Y)t wherein: X is Formula (X), each Y is the same or different and is Formula (Y) —O—[CH2—CH(OH)—CH2—O—]m—H; or —C(OR5)3; R1, R2, R3, R6, R7, R8, R9, R10 are each, independently, —(CH2CH2O)m—R4, —[CH2CH(OH)CH2O]nH, OR11, —O(CH2)PR13, or —(CH2)R12; each R4 is independently OR5 or OH; R5, R11 and R12 are each, independently, H or C1-C30 alkyl; R13 is —NH3+Cl? or —NHBoc; t is an integer from 2 to 6; m, n, and p are each, independently, an integer from 1 to 12; and each q, r, and s is 0 or 1 and the sum of q+r+s is at least 2.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: April 18, 2017
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Virgil Percec, Andrew D. Hughes, Pawaret Leowanawat, Daniela A. Wilson, Christopher J. Wilson
  • Publication number: 20160108076
    Abstract: The invention concerns compounds of the formula (I) wherein: Y1 and Y2 are independently a monosaccharide or disaccharide; X1 and X2 are independently —(R9—O)m—, —(R10)p—, —O—(R11—O)q—, —R16—O—R17—O— or a covalent bond; Q1 and Q2 are independently a nitrogen-containing heterocycle moiety; Z1 and Z2 are independently —(O—R7)—, —(O—C(?O)—R8)a-, —O—C(?O)—R12—C(=0)-R13—, —O—C(?O)—R14—C(?O)—R15 or a covalent bond; R7-R17 are each independently C1-C6 alkyl; R1-R6 are each independently a linear or branched alkly group; b, c, d, e, f, and g are 0 or 1, provided b+c+d equals at least 2 and e+f+g equals at least 2; and a, m, p, and q are each an integer from 1-6.
    Type: Application
    Filed: May 21, 2014
    Publication date: April 21, 2016
    Inventor: Virgil PERCEC
  • Patent number: 8614347
    Abstract: The present invention concerns the design of an environmentally friendly and efficient fluorous phase based on dendritic architectures containing short semifluorinated groups on their periphery.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 24, 2013
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Virgil Percec, Christopher J. Wilson, Daniela A. Wilson, Andrew E Feiring
  • Publication number: 20130245216
    Abstract: SET-LRP polymerization of acrylic monomers under acidic conditions is described. The source of the acidity may be the solvent (e.g., an acetic acid-containing solvent) or in the monomer content (e.g., acrylic acid or methacrylic acid, optionally in combination with other monomers such as methyl methacrylate).
    Type: Application
    Filed: July 22, 2011
    Publication date: September 19, 2013
    Applicants: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, ROHM AND HAAS COMPANY
    Inventors: Antony K. Van Dyk, Susan J. Fitzwater, Sven Fleischmann, Virgil Percec
  • Patent number: 8530689
    Abstract: The invention concerns processes for the synthesis of a compound of the formula: wherein: R1 and R2 are each, independently, C1-C12 alkyl, CO2R3, OR4, R5(OR6), or C6-C18 aryl; R3-R6 are each, independently, C1-C12 alkyl or C6-C12 aryl; and n and m are each, independently, O or an integer from 1-5; said process comprising:—contacting a compound of the formula H0-R7-0H with BH3 and a compound of the formula in the presence of a nickel-containing catalyst to produce a first product, where R7 is a C2-C12 hydrocarbon group and X is a halogen, OMs or OTs;—contacting the first product in situ with a compound of the formula: in the presence of a nickel-containing catalyst to produce a compound of formula I, where Z is a halogen.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: September 10, 2013
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Virgil Percec, Brad Matthew Rosen, Daniela A. Wilson, Christopher J. Wilson
  • Patent number: 8450427
    Abstract: The invention concerns a method of polymerizing an alkene monomer to produce a polymer using a catalyst that is Cu(O), Cu2Te, CuSe, Cu2S, Cu2O, or a combination thereof, an initiator, and a component comprising a solvent and optional nitrogen-containing ligand, where the combination of the component and monomer is capable of diproportionating Cu(I)X into Cu(O) and Cu(II)X2 where X is Cl, Br, or I.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: May 28, 2013
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventor: Virgil Percec
  • Publication number: 20120308640
    Abstract: The invention concerns compounds of the formula: X—(Y)t wherein: X is Formula (X), each Y is the same or different and is Formula (Y) —O—[CH2—CH(OH)—CH2—O—]m—H; or —C(OR5)3; R1, R2, R3, R6, R7, R8, R9, R10 are each, independently, —(CH2CH2O)m—R4, —[CH2CH(OH)CH2O]nH, OR11, —O(CH2)PR13, or —(CH2)R12; each R4 is independently OR5 or OH; R5, R11 and R12 are each, independently, H or C1-C30 alkyl; R13 is —NH3+Cl? or —NHBoc; t is an integer from 2 to 6; m, n, and p are each, independently, an integer from 1 to 12; and each q, r, and s is 0 or 1 and the sum of q+r+s is at least 2.
    Type: Application
    Filed: August 5, 2010
    Publication date: December 6, 2012
    Applicant: The Trustees of The University of Pennsylvania
    Inventors: Virgil Percec, Andrew D. Hughes, Pawaret Leowanawat, Daniela A. Wilson, Christopher J. Wilson
  • Publication number: 20120277460
    Abstract: The present invention concerns the design of an environmentally friendly and efficient fluorous phase based on dendritic architectures containing short semifluorinated groups on their periphery.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 1, 2012
    Applicant: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
    Inventors: Virgil Percec, Christopher J. Wilson, Daniela A. Wilson, Andrew E. Feiring
  • Publication number: 20120226000
    Abstract: The invention concerns processes for the production of multiarmed star copolymers comprising polymerizing vinyl chloride with a multifunctional initiator in the presence of Na2S2O4 and water. The invention also concerns polymers made from the processes and articles made from the polymers.
    Type: Application
    Filed: December 4, 2009
    Publication date: September 6, 2012
    Applicants: Tekni-Plex ,Inc., The Trustees of the University of Pennsylvania
    Inventors: Virgil Percec, Paul O. Hong
  • Publication number: 20110207957
    Abstract: The invention concerns processes for the synthesis of a compound of the formula: wherein: R1 and R2 are each, independently, C1-C12 alkyl, CO2R3, OR4, R5(OR6), or C6-C18 aryl; R3-R6 are each, independently, C1-C12 alkyl or C6-C12 aryl; and n and m are each, independently, O or an integer from 1-5; said process comprising: —contacting a compound of the formula H0-R7-0H with BH3 and a compound of the formula in the presence of a nickel-containing catalyst to produce a first product, where R7 is a C2-C12 hydrocarbon group and X is a halogen, OMs or OTs; —contacting the first product in situ with a compound of the formula: in the presence of a nickel-containing catalyst to produce a compound of formula I, where Z is a halogen.
    Type: Application
    Filed: April 30, 2009
    Publication date: August 25, 2011
    Applicant: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
    Inventors: Virgil Percec, Brad Matthew Rosen, Daniela A. Wilson, Christopher J. Wilson
  • Publication number: 20100331493
    Abstract: The invention concerns a method of polymerizing an alkene monomer to produce a polymer using a catalyst that is Cu(O), Cu2Te, CuSe, Cu2S, Cu2O, or a combination thereof, an initiator, and a component comprising a solvent and optional nitrogen-containing ligand, where the combination of the component and monomer is capable of diproportionating Cu(I)X into Cu(O) and Cu(II)X2 where X is Cl, Br, or I.
    Type: Application
    Filed: August 3, 2007
    Publication date: December 30, 2010
    Applicant: The Trustees of the University of Pennsylvania
    Inventor: Virgil Percec
  • Patent number: 7776971
    Abstract: The inventive subject matter relates to novel synthetic processes which use a multifunctional compound (the “TERMINI compound”) having a masked or protected functional group, wherein the TERMINI compound is capable of quantitatively and irreversibly interrupting a living polymerization or a chain organic reaction. After deprotection or demasking of the functional group of the TERMINI compound, the same living polymerization or organic reaction resumes with 100% efficiency, or a different living polymerization or organic reaction resumes with 100% chemoselectivity, respectively. Once incorporated into a growing molecule, the TERMINI compound generates a branching point upon resumption of the polymerization or reaction.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: August 17, 2010
    Assignee: The Trustees Of The University Of Pennslyvania
    Inventor: Virgil Percec
  • Patent number: 7671033
    Abstract: An amphiphilic dendritic dipeptide, comprises a dipeptide(s) comprising one or more of a naturally occurring or synthetic amino acids and a dendron. These are suitable for use in various formulations, films, coatings, membranes and sensors, among other applications.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: March 2, 2010
    Assignee: The Trustees of The University of Pennsylvania
    Inventor: Virgil Percec
  • Patent number: 7470762
    Abstract: Acrylic polymers are made by the living radical polymerization of acrylic monomers utilizing organo halide initiators with either metal-free or metal catalysts. Moreover, block copolymers of vinyl halide monomers and acrylic monomers are described by generally polymerizing either the vinyl halide monomers or acrylic monomers utilizing an organo halide initiator in the presence of either a metal catalyst or a metal-free catalyst and subsequently polymerizing thereon the remaining type of monomer.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: December 30, 2008
    Assignee: University of Pennsylvania
    Inventors: Virgil Percec, Tamaz Guliashvili, Anatoliy V. Popov
  • Patent number: 7345127
    Abstract: Acrylic polymers are made by the living radical polymerization of acrylic monomers utilizing organo halide initiators with either metal-free or metal catalysts. Moreover, block copolymers of vinyl halide monomers and acrylic monomers are described by generally polymerizing either the vinyl halide monomers or acrylic monomers utilizing an organo halide initiator in the presence of either a metal catalyst or a metal-free catalyst and subsequently polymerizing thereon the remaining type of monomer.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: March 18, 2008
    Assignee: University of Pennsylvania
    Inventors: Virgil Percec, Tamaz Guliashvili, Anatoliy V. Popov
  • Publication number: 20080039601
    Abstract: Acrylic polymers are made by the living radical polymerization of acrylic monomers utilizing organo halide initiators with either metal-free or metal catalysts. Moreover, block copolymers of vinyl halide monomers and acrylic monomers are described by generally polymerizing either the vinyl halide monomers or acrylic monomers utilizing an organo halide initiator in the presence of either a metal catalyst or a metal-free catalyst and subsequently polymerizing thereon the remaining type of monomer.
    Type: Application
    Filed: August 24, 2007
    Publication date: February 14, 2008
    Inventors: Virgil Percec, Tamaz Guliashvili, Anatoliy Popov
  • Publication number: 20060183865
    Abstract: The inventive subject matter relates to novel synthetic processes which use a multifunctional compound (the “TERMINI compound”) having a masked or protected functional group, wherein the TERMINI compound is capable of quantitatively and irreversibly interrupting a living polymerization or a chain organic reaction. After deprotection or demasking of the functional group of the TERMINI compound, the same living polymerization or organic reaction resumes with 100% efficiency, or a different living polymerization or organic reaction resumes with 100% chemoselectivity, respectively. Once incorporated into a growing molecule, the TERMINI compound generates a branching point upon resumption of the polymerization or reaction.
    Type: Application
    Filed: May 6, 2004
    Publication date: August 17, 2006
    Inventor: Virgil Percec