Granted Patent
Utility
US 6,207,573 · App. 09/314,358
Differential trench open process
Inventor:
Brian Lee
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: May 19, 1999
Inventor
Brian Lee
Assignee (at issue)
Infineon Technologies North America Corp.
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.