Granted Patent
Utility
US 6,472,130 · App. 09/581,670
Solution of tetramethylammonium hydroxide in water and a process for preparing the solution
Inventors:
Stefan Geyer, Michael Horn
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Oct 16, 2000
Inventors
Stefan Geyer
Michael Horn
Assignee (at issue)
Infineon Technologies AG
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.