Granted Patent
Utility
US 6,291,078 · App. 08/956,022
Surface coverings containing aluminum oxide
Inventors:
Hao A. Chen, Isaac Bernard Rufus
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Oct 22, 1997
Inventors
Hao A. Chen
Isaac Bernard Rufus
Assignee (at issue)
MANNINGTON MILLS, INC.
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.