Patents by Inventor John Kroll

John Kroll 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).

  • Retroreflective composite reflective microspheres and reflective inorganic material
    Patent number: 12196987
    Abstract: A robust sintered retroreflective composite comprising, a core bead, a peripheral bead, and an interphase coating. The bead can be used in typical retroreflective indicia and uses.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: January 14, 2025
    Assignee: Tundra COmpoistes, LLC
    Inventors: Adam Bartel, Kurt Heikkila, John Kroll
  • Polymer Compatible Heat Fused Retroreflective Bead
    Publication number: 20240085599
    Abstract: A polymer compatible retroreflective bead. The bead can be used in typical retroreflective uses such as paints tapes and films in highway marking and signs having high retroreflectivity both when initially installed and over the bead lifetime, allowing vehicle drivers to see highway marking lines at night and in adverse conditions during nighttime. When installed the retroreflective beads essentially retroreflect the base color of the highway marking material in which the retroreflective beads are embedded.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 14, 2024
    Applicant: Tundra Composites LLC
    Inventors: Kurt Heikkila, John Kroll
  • Polymer compatible heat fused retroreflective bead
    Patent number: 11860388
    Abstract: A polymer compatible retroreflective bead. The bead can be used in typical retroreflective uses such as paints tapes and films in highway marking and signs having high retroreflectivity both when initially installed and over the bead lifetime, allowing vehicle drivers to see highway marking lines at night and in adverse conditions during nighttime. When installed the retroreflective beads essentially retroreflect the base color of the highway marking material in which the retroreflective beads are embedded.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 2, 2024
    Assignee: Tundra Composites, LLC
    Inventors: Kurt Heikkila, John Kroll
  • Reduced density hollow glass microsphere polymer composite
    Patent number: 11767409
    Abstract: The invention relates to a hollow glass microsphere and polymer composite having enhanced viscoelastic and rheological properties.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: September 26, 2023
    Assignee: Tundra Composites, LLC
    Inventors: Kurt Heikkila, Rodney Williams, John Kroll
  • RETROREFLECTIVE COMPOSITE REFLECTIVE MICROSPHERES AND REFLECTIVE INORGANIC MATERIAL
    Publication number: 20220221628
    Abstract: A robust sintered retroreflective composite comprising, a core bead, a peripheral bead, and an interphase coating. The bead can be used in typical retroreflective indicia and uses.
    Type: Application
    Filed: October 11, 2021
    Publication date: July 14, 2022
    Applicant: Tundra Composites, LLC
    Inventors: Adam Bartel, Kurt Heikkila, John Kroll
  • Polymer Compatible Heat Fused Retroreflective Bead
    Publication number: 20210382211
    Abstract: A polymer compatible retroreflective bead. The bead can be used in typical retroreflective uses such as paints tapes and films in highway marking and signs having high retroreflectivity both when initially installed and over the bead lifetime, allowing vehicle drivers to see highway marking lines at night and in adverse conditions during nighttime. When installed the retroreflective beads essentially retroreflect the base color of the highway marking material in which the retroreflective beads are embedded.
    Type: Application
    Filed: November 25, 2019
    Publication date: December 9, 2021
    Applicant: Tundra Composites, LLC
    Inventors: Kurt Heikkila, John Kroll
  • REDUCED DENSITY HOLLOW GLASS MICROSPHERE POLYMER COMPOSITE
    Publication number: 20210301100
    Abstract: The invention relates to a hollow glass microsphere and polymer composite having enhanced viscoelastic and rheological properties.
    Type: Application
    Filed: April 9, 2021
    Publication date: September 30, 2021
    Applicant: Tundra Composites, LLC
    Inventors: Kurt Heikkila, Rodney Williams, John Kroll
  • REDUCED DENSITY HOLLOW GLASS MICROSPHERE POLYMER COMPOSITE
    Publication number: 20190382553
    Abstract: The invention relates to a hollow glass microsphere and polymer composite having enhanced viscoelastic and rheological properties.
    Type: Application
    Filed: August 21, 2019
    Publication date: December 19, 2019
    Applicant: Tundra Composites, LLC
    Inventors: Kurt Heikkila, Rodney Williams, John Kroll
  • REDUCED DENSITY HOLLOW GLASS MICROSPHERE POLYMER COMPOSITE
    Publication number: 20180009964
    Abstract: The invention relates to a hollow glass microsphere and polymer composite having enhanced viscoelastic and rheological properties.
    Type: Application
    Filed: August 18, 2017
    Publication date: January 11, 2018
    Applicant: Tundra Composites, LLC
    Inventors: Kurt Heikkila, Rodney Williams, John Kroll
  • Bacterial virulence genes
    Publication number: 20060134135
    Abstract: An attenuated Actinobacillus pleuropneumoniae bacterium has a mutation in a gene required for bacterial virulence. Vaccines based upon the bacterium are provided, as are isolated virulence genes and polypeptides and uses thereof.
    Type: Application
    Filed: December 8, 2003
    Publication date: June 22, 2006
    Inventors: John Kroll, Paul Langford, Janine Bosse, Amanda Beddek, Andrew Rycroft, Brian Sheehan
  • Neisserial vaccine compositions and methods
    Publication number: 20050169943
    Abstract: Methods and compositions for the treatment of microbial infection, and in particular meningococcal disease, comprise a commensal Neisseria or an extract of a commensal Neisseria. Further methods and compositions comprise commensal Neisseria which express genes from virulent strains of Neisseria and/or heterologous gene products from non-Neisserial sources. Such compositions are used in vaccine preparations for the treatment of microbial infection.
    Type: Application
    Filed: February 14, 2005
    Publication date: August 4, 2005
    Inventors: Andrew Robinson, Andrew Gorringe, Michael Hudson, Philippa Bracegirdle, John Kroll, Paul Langford, Steven Webb, Keith Cartwright, Cliona O'Dwyer