Patents by Inventor Douglas Alan Hanggi

Douglas Alan Hanggi 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).

  • Dental materials with nano-sized silica particles
    Patent number: 6899948
    Abstract: A dental material comprising a hardenable resin and silica particles dispersed within the hardenable resin, wherein the silica particles have an average diameter of less than about 200 nm and are present in an amount greater than about 40 wt % of the weight of the dental material. The dental material may further comprise a heavy metal oxide. The dental material can be used as dental adhesives, artificial crowns, anterior or posterior fillings, casting materials, cavity liners, cements, coating compositions, mill blanks, orthodontic devices, restoratives, prostheses, and sealants.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: May 31, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Xiaodong Zhang, Brant Ulrick Kolb, Douglas Alan Hanggi, Bradley Dene Craig
  • Dental materials with nano-sized silica particles
    Publication number: 20020156152
    Abstract: A dental material comprising a hardenable resin and silica particles dispersed within the hardenable resin, wherein the silica particles have an average diameter of less than about 200 nm and are present in an amount greater than about 40 wt % of the weight of the dental material. The dental material may further comprise a heavy metal oxide. The dental material can be used as dental adhesives, artificial crowns, anterior or posterior fillings, casting materials, cavity liners, cements, coating compositions, mill blanks, orthodontic devices, restoratives, prostheses, and sealants.
    Type: Application
    Filed: April 15, 2002
    Publication date: October 24, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Xiaodong Zhang, Brant Ulrick Kolb, Douglas Alan Hanggi, Bradley Dene Craig
  • Foams containing functionalized metal oxide nanoparticles and methods of making same
    Patent number: 6462100
    Abstract: The invention discloses methods for making foams comprising functionalized metal oxide nanoparticles by photopolymerizing or thermally polymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are also disclosed. Articles and uses for the foams are also described.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: October 8, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Kristin LaVelle Thunhorst, Douglas Alan Hanggi
  • Radiopaque dental materials with nano-sized particles
    Patent number: 6387981
    Abstract: A dental material comprising a hardenable resin, a non-heavy metal oxide particle and a heavy metal oxide. The dental materials can be radiopaque, strong, translucent, or resistant to toothbrush abrasion, or combinations thereof.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 14, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Xiaodong Zhang, Brant Ulrick Kolb, Douglas Alan Hanggi, Sumita Basu Mitra, Paula D'Nell Ario, Richard Paul Rusin
  • Foams containing functionalized metal oxide nanoparticles and methods of making same
    Patent number: 6353037
    Abstract: The invention discloses methods for making foams comprising functionalized metal oxide nanoparticles by photopolymerizing or thermally polymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are also disclosed. Articles and uses for the foams are also described.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: March 5, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Kristin LaVelle Thunhorst, Douglas Alan Hanggi
  • Foams containing functionalized metal oxide nanoparticles and methods of making same
    Publication number: 20020022672
    Abstract: The invention discloses methods for making foams comprising functionalized metal oxide nanoparticles by photopolymerizing or thermally polymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are also disclosed. Articles and uses for the foams are also described.
    Type: Application
    Filed: July 23, 2001
    Publication date: February 21, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Kristin LaVelle Thunhorst, Douglas Alan Hanggi