Patents by Inventor Robert Pal
Robert Pal 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).
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Publication number: 20230149567Abstract: Embodiments of the present disclosure pertain to methods of opening a lipid bilayer by associating the lipid bilayer with a molecule that includes a moving component capable of moving (e.g., rotating) in response to an external stimulus; and exposing the molecule to an external stimulus before, during or after associating the molecule with the lipid bilayer. The exposing causes the moving component of the molecule to move and thereby open the lipid bilayer (e.g., by pore formation). The external stimuli may include an energy source, such as ultraviolet light. The opened lipid bilayer may be a component of cell membranes in vitro or in vivo. The opening of the lipid bilayer may allow for the passage of various materials (e.g., active agents, such as peptide-based drugs) through the lipid bilayer and into cells. Additional embodiments of the present disclosure pertain to the aforementioned molecules for opening lipid bilayers.Type: ApplicationFiled: January 4, 2023Publication date: May 18, 2023Applicants: William Marsh Rice University, Durham UniversityInventors: James M. TOUR, Robert PAL, Victor GARCÍA LÓPEZ, Lizanne NILEWSKI
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Patent number: 11565003Abstract: Embodiments of the present disclosure pertain to methods of opening a lipid bilayer by associating the lipid bilayer with a molecule that includes a moving component capable of moving (e.g., rotating) in response to an external stimulus; and exposing the molecule to an external stimulus before, during or after associating the molecule with the lipid bilayer. The exposing causes the moving component of the molecule to move and thereby open the lipid bilayer (e.g., by pore formation). The external stimuli may include an energy source, such as ultraviolet light. The opened lipid bilayer may be a component of cell membranes in vitro or in vivo. The opening of the lipid bilayer may allow for the passage of various materials (e.g., active agents, such as peptide-based drugs) through the lipid bilayer and into cells. Additional embodiments of the present disclosure pertain to the aforementioned molecules for opening lipid bilayers.Type: GrantFiled: April 16, 2021Date of Patent: January 31, 2023Assignees: William Marsh Rice University, Durham UniversityInventors: James M. Tour, Robert Pal, Victor García López, Lizanne Nilewski
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Patent number: 11154623Abstract: Embodiments of the present disclosure pertain to methods of opening a lipid bilayer by associating the lipid bilayer with a molecule that includes a moving component capable of moving (e.g., rotating) in response to an external stimulus; and exposing the molecule to an external stimulus before, during or after associating the molecule with the lipid bilayer. The exposing causes the moving component of the molecule to move and thereby open the lipid bilayer (e.g., by pore formation). The external stimuli may include an energy source, such as ultraviolet light. The opened lipid bilayer may be a component of cell membranes in vitro or in vivo. The opening of the lipid bilayer may allow for the passage of various materials (e.g., active agents, such as peptide-based drugs) through the lipid bilayer and into cells. Additional embodiments of the present disclosure pertain to the aforementioned molecules for opening lipid bilayers.Type: GrantFiled: July 14, 2017Date of Patent: October 26, 2021Assignees: WILLIAM MARSH RICE UNIVERSITY, DURHAM UNIVERSITYInventors: James M. Tour, Robert Pal, Victor García-López, Lizanne Nilewski
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Publication number: 20210252166Abstract: Embodiments of the present disclosure pertain to methods of opening a lipid bilayer by associating the lipid bilayer with a molecule that includes a moving component capable of moving (e.g., rotating) in response to an external stimulus; and exposing the molecule to an external stimulus before, during or after associating the molecule with the lipid bilayer. The exposing causes the moving component of the molecule to move and thereby open the lipid bilayer (e.g., by pore formation). The external stimuli may include an energy source, such as ultraviolet light. The opened lipid bilayer may be a component of cell membranes in vitro or in vivo. The opening of the lipid bilayer may allow for the passage of various materials (e.g., active agents, such as peptide-based drugs) through the lipid bilayer and into cells. Additional embodiments of the present disclosure pertain to the aforementioned molecules for opening lipid bilayers.Type: ApplicationFiled: April 16, 2021Publication date: August 19, 2021Applicants: William Marsh Rice University, Durham UniversityInventors: James M. Tour, Robert Pal, Victor García López, Lizanne Nilewski
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Publication number: 20190290785Abstract: Embodiments of the present disclosure pertain to methods of opening a lipid bilayer by associating the lipid bilayer with a molecule that includes a moving component capable of moving (e.g., rotating) in response to an external stimulus; and exposing the molecule to an external stimulus before, during or after associating the molecule with the lipid bilayer. The exposing causes the moving component of the molecule to move and thereby open the lipid bilayer (e.g., by pore formation). The external stimuli may include an energy source, such as ultraviolet light. The opened lipid bilayer may be a component of cell membranes in vitro or in vivo. The opening of the lipid bilayer may allow for the passage of various materials (e.g., active agents, such as peptide-based drugs) through the lipid bilayer and into cells. Additional embodiments of the present disclosure pertain to the aforementioned molecules for opening lipid bilayers.Type: ApplicationFiled: July 14, 2017Publication date: September 26, 2019Applicants: William Marsh Rice University, Durham UniversityInventors: James M. Tour, Robert Pal, Victor Garcia, Lizanne Nilewski
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Patent number: 9448225Abstract: The invention provides a compound of formula (I): (wherein: R1 is an optionally substituted 2-(1-azathiaxanthone); each —R2 is independently of the formula —CH2—C(?O)—R4, wherein R4 is an amino acid or a salt thereof, attached to the remainder of R2 through the nitrogen atom of the amino group; and R3 is hydrogen or a C1-6 alkyl group); or (wherein: R1 is an optionally substituted 2-(1-azaxanthone); each R2 is independently an optionally substituted glutaric or succinic acid, or a salt or ester thereof; and R3 is hydrogen or a C1-6 alkyl group).Type: GrantFiled: December 16, 2013Date of Patent: September 20, 2016Assignee: University of DurhamInventors: David Parker, Robert Pal
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Publication number: 20140179015Abstract: The invention provides a compound of formula (I): (wherein: R1 is an optionally substituted 2-(1-azathiaxanthone); each —R2 is independently of the formula —CH2—C(?O)—R4, wherein R4 is an amino acid or a salt thereof, attached to the remainder of R2 through the nitrogen atom of the amino group; and R3 is hydrogen or a C1-6 alkyl group); or (wherein: R1 is an optionally substituted 2-(1-azaxanthone); each R2 is independently an optionally substituted glutaric or succinic acid, or a salt or ester thereof; and R3 is hydrogen or a C1-6 alkyl group).Type: ApplicationFiled: December 16, 2013Publication date: June 26, 2014Applicant: University of DurhamInventors: David PARKER, Robert Pal
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Patent number: 8628978Abstract: A compound of formula (I) is provided: wherein: R1 is an optionally substituted 2-(1-azathiaxanthone); each —R2 is independently of the formula —CH2—C(?O)—R4, wherein R4 is an amino acid or a salt thereof, attached to the remainder of R2 through the nitrogen atom of the amino group; and R3 is hydrogen or a C1-6 alkyl group; or wherein: R1 is an optionally substituted 2-(1-azaxanthone); each R2 is independently an optionally substituted glutaric or succinic acid, or a salt or ester thereof; and R3 is hydrogen or a C1-6 alkyl group.Type: GrantFiled: January 29, 2010Date of Patent: January 14, 2014Assignee: University of DurhamInventors: David Parker, Robert Pal
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Patent number: 8193174Abstract: The invention provides a compound comprising a xanthone or thiaxanthone sensitizing moiety, capable of coordinating to a lanthanide ion by the nitrogen atom of an integral pyridyl group or a related group able to bind a lanthanide ion.Type: GrantFiled: May 11, 2006Date of Patent: June 5, 2012Assignee: University of DurhamInventors: Parker David, Robert Pal, Junhua Yu
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Publication number: 20110287558Abstract: A compound of formula (I) is provided: wherein: R1 is an optionally substituted 2-(1-azathiaxanthone); each —R2 is independently of the formula —CH2—C(?O)—R4, wherein R4 is an amino acid or a salt thereof, attached to the remainder of R2 through the nitrogen atom of the amino group; and R3 is hydrogen or a C1-6 alkyl group; or wherein: R1 is an optionally substituted 2-(1-azaxanthone); each R2 is independently an optionally substituted glutaric or succinic acid, or a salt or ester thereof; and R3 is hydrogen or a C1-6 alkyl group.Type: ApplicationFiled: January 29, 2010Publication date: November 24, 2011Inventors: David Parker, Robert Pal
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Publication number: 20080312431Abstract: The invention provides a compound comprising a xanthone or thiaxanthone sensitising moiety, capable of coordinating to a lanthanide ion by the nitrogen atom of an integral pyridyl group or a related group able to bind a lanthanide ion.Type: ApplicationFiled: May 11, 2006Publication date: December 18, 2008Inventors: David Parker, Robert Pal, Junhua Yu