Patents by Inventor Donald R. O'Keefe

Donald R. O'Keefe 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).

  • Graffiti and/or environmental protective article having removable sheets
    Publication number: 20030087054
    Abstract: This invention relates to an article comprising a transparent stack of sheets that may be applied, for example, to protect substrates such as glass or plastic windows, signage or displays. A topmost sheet can be peeled away after it is damaged to reveal an undamaged sheet below. The invention also relates to the protected substrates and a method of protecting substrates such as glass or plastic windows, signage and displays from vandalism or other surface damage by adhering the stack of sheets to the substrate to be protected and subsequently pulling a topmost sheet away from the stack after it becomes damaged.
    Type: Application
    Filed: September 13, 2002
    Publication date: May 8, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Jeffrey R. Janssen, Albert I. Everaerts, Donald R. O'Keefe, William F. Sheffield
  • Repaired scratched and/or abraded transparent substrates having protective removable sheets thereon and a method of making
    Patent number: 6482488
    Abstract: This invention relates to a method of repairing one or both sides of an optically damaged substrate such as rigid glass or plastic window, signage or displays. The invention also relates to the repaired substrates. This invention also relates to an article comprising a transparent stack of sheets that may be applied, for example, to protect said repaired substrates such as glass or plastic windows, signage or displays. A topmost sheet can be peeled away after it is damaged to reveal an undamaged sheet below. The invention also relates to the protected substrates and a method of protecting substrates such as glass or plastic windows, signage and displays from vandalism or other surface damage by adhering the stack of sheets to the substrate to be protected and subsequently pulling a topmost sheet away from the stack after it becomes damaged.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: November 19, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey R. Janssen, Albert I. Everaerts, Donald R. O'Keefe, William F. Sheffield
  • Graffiti and/or environmental protective article having removable sheets, substrates protected therewith, and a method of use
    Patent number: 6461709
    Abstract: This invention relates to an article comprising a transparent stack of sheets that may be applied, for example, to protect substrates such as glass or plastic windows, signage or displays. A topmost sheet can be peeled away after it is damaged to reveal an undamaged sheet below. The invention also relates to the protected substrates and a method of protecting substrates such as glass or plastic windows, signage and displays from vandalism or other surface damage by adhering the stack of sheets to the substrate to be protected and subsequently pulling a topmost sheet away from the stack after it becomes damaged.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: October 8, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey R. Janssen, Albert I. Everaerts, Donald R. O'Keefe, William F. Sheffield
  • Method of repairing scratched and/or abraded transparent substrates and the repaired substrates
    Publication number: 20010000076
    Abstract: The present invention relates to scratches and/or abraded first substrates such as windows that have been repaired using a bonding material and a second undamaged substrate. Repaired articles and method of repair are provided.
    Type: Application
    Filed: November 30, 2000
    Publication date: March 29, 2001
    Inventors: Jeffrey R. Janssen, Albert I. Everaerts, Donald R. O'Keefe, William F. Sheffield
  • Method of repairing scratched and/or abraded transparent substrates and the repaired substrates
    Patent number: 6180245
    Abstract: The present invention relates to scratches and/or abraded first substrates such as windows that have been repaired using a bonding material and a second undamaged substrate. Repaired articles and method of repair are provided.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: January 30, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey R. Janssen, Albert I. Everaerts, Donald R. O'Keefe, William F. Sheffield
  • One-part, room-temperature latent, curable isocyanate compositions
    Patent number: 3963680
    Abstract: A one-part, room-temperature latent, curable isocyanate composition is prepared comprising an aliphatic or aromatic polyisocyanate having dispersed therethrough capsules containing a viscous liquid catalyst solution capable of curing the polyisocyanate. The capsules comprise a shell wall of partially polymerized isocyanate, wherein the partially polymerized isocyanate contains linkages selected from the group consisting essentially of urea, urethane, and isocyanurate linkages.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: June 15, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald R. O'Keefe, A. Joseph Gasper