Granted Patent
Utility
US 6,623,856 · App. 09/520,488
Dental glass powders comprising spherical glass particles of specific particle size distribution
Inventors:
Toivo T. Kodas, Mark J. Hampden-Smith, Quint H. Powell, James Brewster, Daniel J. Skamser, Klaus Kunze, Paolina Atanassova, Paul Napolitano
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Mar 8, 2000
Inventors
Toivo T. Kodas
Mark J. Hampden-Smith
Quint H. Powell
James Brewster
Daniel J. Skamser
Klaus Kunze
Paolina Atanassova
Paul Napolitano
Assignee (at issue)
Superior MicroPowders LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.