Granted Patent
Utility
US 6,753,184 · App. 09/959,121
Humidity indicators
Inventors:
Stephen Moreton, Graham J. Earl
Patented Case
View Patent ↗
Granted: Jun 22, 2004
Filed: Oct 22, 2001
Inventors
Stephen Moreton
Graham J. Earl
Assignee (at issue)
INEOS Silicas Ltd.
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.