Granted Patent
Utility
US 6,440,382 · App. 09/387,119
Method for producing water for use in manufacturing semiconductors
Inventor:
Don Powell
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Aug 31, 1999
Inventor
Don Powell
Assignee (at issue)
Micron Technology, 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.