Patents by Inventor Randall T. Irvin

Randall T. Irvin 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: 9096775
    Abstract: The present invention relates to a methods and composition in which a D-form or retro-inverso Pseudomonas pilin peptide is bound to a substrate. The disclosed methods and composition are useful for inhibiting biofilm formation by non-Pseudomonas bacteria, for reducing the inflammatory response to a material, for reducing corrosion of metals, and in biosensor applications.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: August 4, 2015
    Assignee: Arch Biophysics, Inc.
    Inventors: Randall T. Irvin, Elisabeth M. Davis, DongYang Li, Daniel Abraham Muruve
  • Patent number: 8961984
    Abstract: The present invention relates to a method for covalently attaching a compound to a stainless steel, tin, iron, or titanium substrate, by contacting exposed surface(s) of the substrate with a synthetic pilin peptide containing a disulfide loop derived from the C-terminal receptor binding protein of Type IV P. aeruginosa (T4P) pilin, to bind the pilin peptide to the exposed surface(s), and covalently attaching the compound to the pilin peptide. Also disclosed are a substrate formed by the method and a biosensor device that uses the uses. Also disclosed are methods for improving the corrosion resistance, adhesive force, hardness and electron work function of certain metals.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: February 24, 2015
    Assignee: Arch Biophysics, Inc.
    Inventors: Randall T. Irvin, Elisabeth M. Davis, DongYang Li
  • Patent number: 8454977
    Abstract: The present invention relates to a composition, device and method for preventing or inhibiting biofilm formation on biotic or abiotic surfaces. The composition comprises a peptide based on the C-terminal receptor binding domain of Pseudomonas aeruginosa type IV pilin, which binds to an abiotic surface (e.g., steel, plastic) with high affinity and prevents binding of a variety of P. aeruginosa strains to the surface. The inventive composition represents a non-toxic inhibitor for biofilm formation, particularly on an abiotic surface, which is responsible for a large number of problematic diseases and massive economic losses. The inventive method is useful as a safe and environmentally friendly means of modifying a surface of a variety of biomedical, nanotechnological, and biotechnological devices or articles.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: June 4, 2013
    Assignee: The Regents of the University of Colorado, a Body Corporate
    Inventors: Robert S. Hodges, Randall T. Irvin, Carmen Giltner, Erin Van Schaik
  • Patent number: 8354267
    Abstract: Transgenic microbes with an altered electrogenic efficacy, biofilms comprising such microbes, and microbial fuel cells comprising such microbes are provided. The microbial fuel cells can be operated as monitors, filtration devices, and sensors.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: January 15, 2013
    Assignees: Bacterial Robotics, LLC, University of Cincinnati
    Inventors: Jason E. Barkeloo, Daniel J. Hassett, Randall T. Irvin
  • Publication number: 20120016102
    Abstract: The present invention relates to a composition, device and method for preventing or inhibiting biofilm formation on biotic or abiotic surfaces. The composition comprises a peptide based on the C-terminal receptor binding domain of Pseudomonas aeruginosa type IV pilin, which binds to an abiotic surface (e.g., steel, plastic) with high affinity and prevents binding of a variety of P. aeruginosa strains to the surface. The inventive composition represents a non-toxic inhibitor for biofilm formation, particularly on an abiotic surface, which is responsible for a large number of problematic diseases and massive economic losses. The inventive method is useful as a safe and environmentally friendly means of modifying a surface of a variety of biomedical, nanotechnological, and biotechnological devices or articles.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 19, 2012
    Applicants: UNIVERSITY OF ALBERTA, THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE
    Inventors: Robert S. Hodges, Randall T. Irvin, Carmen Giltner, Erin Van Schaik
  • Publication number: 20110293684
    Abstract: The present invention relates to a methods and composition in which a D-form or retro-inverso Pseudomonas pilin peptide is bound to a substrate. The disclosed methods and composition are useful for inhibiting biofilm formation by non-Pseudomonas bacteria, for reducing the inflammatory response to a material, for reducing corrosion of metals, and in biosensor applications.
    Type: Application
    Filed: April 14, 2011
    Publication date: December 1, 2011
    Applicant: ARCH BIOPHYSICS, INC.
    Inventors: Randall T. Irvin, Elisabeth M. Davis, DongYang Li, Daniel Abraham Muruve
  • Patent number: 7976851
    Abstract: The present invention relates to a composition and method for preventing or inhibiting biofilm formation on biotic or abiotic surfaces. The composition comprises a peptide based on the C-terminal receptor binding domain of Pseudomonas aeruginosa type IV pilin, which binds to an abiotic surface (e.g., steel, plastic) with high affinity and prevents binding of a variety of P. aeruginosa strains to the surface. The inventive composition represents a non-toxic inhibitor for biofilm formation, particularly on an abiotic surface, which is responsible for a large number of problematic diseases and massive economic losses. The inventive method is useful as a safe and environmentally friendly means of modifying a surface of a variety of biomedical, nanotechnological, and biotechnological devices or articles.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: July 12, 2011
    Assignee: The Regents of the University of Colorado, A Body Corporate
    Inventors: Robert S. Hodges, Randall T. Irvin, Carmen Giltner, Erin Van Schaik
  • Publication number: 20110087321
    Abstract: The present invention relates to a method for covalently attaching a compound to a stainless steel, tin, iron, or titanium substrate, by contacting exposed surface(s) of the substrate with a synthetic pilin peptide containing a disulfide loop derived from the C-terminal receptor binding protein of Type IV P. aeruginosa (T4P) pilin, to bind the pilin peptide to the exposed surface(s), and covalently attaching the compound to the pilin peptide. Also disclosed are a substrate formed by the method and a biosensor device that uses the uses. Also disclosed are methods for improving the corrosion resistance, adhesive force, hardness and electron work function of certain metals.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 14, 2011
    Applicant: ARCH BIOPHYSICS, INC.
    Inventors: RANDALL T. IRVIN, ELISABETH M. DAVIS, DONGYANG LI
  • Publication number: 20100297737
    Abstract: Transgenic microbes with an altered electrogenic efficacy, biofilms comprising such microbes, and microbial fuel cells comprising such microbes are provided. The microbial fuel cells can be operated as monitors, filtration devices, and sensors.
    Type: Application
    Filed: February 23, 2010
    Publication date: November 25, 2010
    Inventors: JASON E. BARKELOO, DANIEL J. HASSETT, RANDALL T. IRVIN
  • Publication number: 20100279178
    Abstract: Microbial fuel cells may include anode(s), cathode(s) and a biofilm attached to at least the anode. The biofilm may include bacterial cells adapted to facilitate transfer of a plurality of electrons to the anode from a feedstock. In an example embodiment, a microbial fuel surface may include a large surface area to volume ratio in order to increase power (electron) generation and/or transfer.
    Type: Application
    Filed: February 23, 2010
    Publication date: November 4, 2010
    Inventors: Jason E. Barkeloo, Daniel J. Hassett, Randall T. Irvin
  • Publication number: 20080287367
    Abstract: The present invention relates to a composition and method for preventing or inhibiting biofilm formation on biotic or abiotic surfaces. The composition comprises a peptide based on the C-terminal receptor binding domain of Pseudomonas aeruginosa type IV pilin, which binds to an abiotic surface (e.g., steel, plastic) with high affinity and prevents binding of a variety of P. aeruginosa strains to the surface. The inventive composition represents a non-toxic inhibitor for biofilm formation, particularly on an abiotic surface, which is responsible for a large number of problematic diseases and massive economic losses. The inventive method is useful as a safe and environmentally friendly means of modifying a surface of a variety of biomedical, nanotechnological, and biotechnological devices or articles.
    Type: Application
    Filed: July 21, 2006
    Publication date: November 20, 2008
    Applicants: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE, UNIVERSITY OF ALBERTA
    Inventors: Robert S. Hodges, Randall T. Irvin, Carmen Giltner, Erin Van Schaik
  • Patent number: 7262272
    Abstract: The invention relates to the use of constrained coiled-coil polypeptides to mimic ?-helical structural elements of native proteins. These constrained peptidyl mimetics are used to generate and/or identify ligands which selectively bind the ?-helical segment contained in the native protein.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: August 28, 2007
    Assignee: The Governors of the University of Alberta
    Inventors: Leslie H. Kondejewski, Randall T. Irvin, Robert S. Hodges
  • Patent number: 6872806
    Abstract: The invention relates to the use of constrained coiled-coil polypeptides to mimic ?-helical structural elements of native proteins. These constrained peptidyl mimetics are used to generate and/or identify ligands, which selectively bind the ?-helical segment contained in the native protein.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: March 29, 2005
    Assignee: The Governors of the University of Alberta
    Inventors: Leslie H. Kondejewski, Randall T. Irvin, Robert S. Hodges
  • Patent number: 6767545
    Abstract: A composition and method for treating or preventing infection by Pseudomonas aeruginosa is disclosed. The composition includes a P. aeruginosa pilin peptide modified to prevent oligomerization of the pilin. The method involves administered the composition to a person infected with Pseudomonas are at risk of such infection.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: July 27, 2004
    Assignee: Governors of the University of Alberta
    Inventors: Randall T. Irvin, Randy J. Read, Bart Hazes, Wah Y. Wong, Sastry A. Parimi, Linda M. G. Glasier
  • Publication number: 20030211114
    Abstract: A C-terminal pilin peptide vaccine for immunizing or treating a patient for infection by a Pseudomonas aeruginosa (PA) infection is disclosed. The peptide comprises the peptide identified as SEQ ID NOS. 3-6; and a carrier protein conjugated to the peptide. Also disclosed is a pilin peptide C-terminal PA pilin peptide having the amino acid sequence identified as SEQ ID NO: 3, and analogs thereof having one of residues T, K, or A at position 130, D, T, or N at position 132, Q, A, or V at position 133, E, P, N, or A at position 135, Q, M, or K at position 136, and I, T, L, or R at position 138, excluding SEQ ID NOS: 1, 2, 9, 10, and 11, and the ability to cross-react with antibodies against the corresponding C-terminal peptides from PA strains PAK and PAO.
    Type: Application
    Filed: January 14, 2003
    Publication date: November 13, 2003
    Inventors: Robert S. Hodges, Randall T. Irvin, Paul J. Cachia
  • Patent number: 6541007
    Abstract: A C-terminal pilin peptide vaccine for immunizing or treating a patient for infection by a Pseudomonas aeruginosa (PA) infection is disclosed. The peptide comprises the peptide identified as SEQ ID NOS. 3-6; and a carrier protein conjugated to the peptide. Also disclosed is a pilin peptide C-terminal PA pilin peptide having the amino acid sequence identified as SEQ ID NO:3, and analogs thereof having one of residues T, K, or A at position 130, D, T, or N at position 132, Q, A, or V at position 133, E, P, N, or A at position 135, Q, M, or K at position 136, and I, T, L, or R at position 138, excluding SEQ ID NOS: 1, 2, 9, 10, and 11, and the ability to cross-react with antibodies against the corresponding C-terminal peptides from PA strains PAK and PAO.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: April 1, 2003
    Assignee: The Governors of the University of Alberta
    Inventors: Robert S. Hodges, Randall T. Irvin, Paul J. Cachia
  • Patent number: 6478939
    Abstract: A biosensor apparatus for detecting a binding event between a ligand and receptor. The apparatus includes a biosensor surface and surface-bound two-subunit heterodimer complexes composed of first and second, preferably oppositely charged peptides that together form an &agr;-helical coiled-coil heterodimer. The first peptide is attached to the biosensor surface, and the second peptide carries the ligand, accessible for binding by a ligand-binding agent. Binding of anti-ligand binding agent to the surface-bound ligand is detected by a suitable detector. A ligand-specific biosensor surface can be readily prepared from a universal template containing the first charged peptide, by addition of a selected ligand attached to the second peptide.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: November 12, 2002
    Assignees: Pence, Inc., McGill University
    Inventors: R. Bruce Lennox, Robert S. Hodges, Randall T. Irvin
  • Patent number: 6461490
    Abstract: A biosensor apparatus for detecting a binding event between a ligand and receptor. The apparatus includes a biosensor surface and surface-bound two-subunit heterodimer complexes composed of first and second, preferably oppositely charged peptides that together form an &agr;-helical coiled-coil heterodimer. The-first peptide is attached to the biosensor surface, and the second peptide carries the ligand, accessible for binding by a ligand-binding agent. Binding of anti-ligand binding agent to the surface-bound ligand is detected by a suitable detector. A ligand-specific biosensor surface can be readily prepared from a universal template containing the first charged peptide, by addition of a selected ligand attached to the second peptide.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: October 8, 2002
    Assignees: PENCE, Inc., McGill University
    Inventors: R. Bruce Lennox, Robert S. Hodges, Randall T. Irvin
  • Publication number: 20020098196
    Abstract: A composition and method for treating or preventing infection by Pseudomonas aeruginosa is disclosed. The composition includes a P. aeruginosa pilin peptide modified to prevent oligomerization of the pilin. The method involves administered the composition to a person infected with Pseudomonas are at risk of such infection.
    Type: Application
    Filed: May 24, 2001
    Publication date: July 25, 2002
    Inventors: Randall T. Irvin, Randy J. Read, Bart Hazes, Wah Y. Wong, Sastry A. Parimi, Linda M. G. Glasier
  • Patent number: 6342233
    Abstract: A composition and method for treating or preventing infection by Pseudomonas aeruginosa is disclosed. The composition includes a P. aeruginosa pilin peptide modified to prevent oligomerization of the pilin. The method involves administered the composition to a person infected with Pseudomonas are at risk of such infection.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: January 29, 2002
    Assignee: Governors of the University of Alberta
    Inventors: Randall T. Irvin, Randy J. Read, Bart Hazes, Wah Y. Wong, Sastry A. Parimi, Linda M. G. Glasier