Patents by Inventor Craig W. Lindsay

Craig W. Lindsay 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).

  • Pavement markings, reflective elements, and methods of making microspheres
    Patent number: 8591044
    Abstract: Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a binder (e.g., polymeric). Also described are microspheres (e.g., glass-ceramic), methods of making microspheres, spheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: November 26, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Kenton D. Budd, Matthew H. Frey, Craig W. Lindsay
  • PAVEMENT MARKINGS, REFLECTIVE ELEMENTS, AND METHODS OF MAKING MICROSPHERES
    Publication number: 20120236413
    Abstract: Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a binder (e.g., polymeric). Also described are microspheres (e.g., glass-ceramic), methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials.
    Type: Application
    Filed: August 21, 2009
    Publication date: September 20, 2012
    Inventors: Kenton D. Budd, Matthew H. Frey, Craig W. Lindsay
  • PAVEMENT MARKINGS, REFLECTIVE ELEMENTS, AND METHODS OF MAKING MICROSPHERES
    Publication number: 20120229899
    Abstract: Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres 0 partially embedded in a binder (e.g., polymeric). Also described are microspheres (e.g., glass-ceramic), methods of making microspheres, spheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).
    Type: Application
    Filed: August 21, 2009
    Publication date: September 13, 2012
    Inventors: Kenton D. Budd, Matthew H. Frey, Craig W. Lindsay