Granted Patent
Utility
US 6,180,223 · App. 09/202,720
Densification of a porous structure
Inventors:
Ronald Fisher, Keith A. Williams
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Dec 21, 1998
Inventors
Ronald Fisher
Keith A. Williams
Assignee (at issue)
Dunlop GmbH
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.