Granted Patent
Utility
US 6,712,897 · App. 09/861,942
Pre-blend composition, and method of making joint compound using same
Inventors:
Amba Ayambem, Richard E. Smith, Salvatore R. Taravella
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: May 21, 2001
Inventors
Amba Ayambem
Richard E. Smith
Salvatore R. Taravella
Assignee (at issue)
National Gypsum Properties, 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.