Granted Patent
Utility
US 5,833,869 · App. 08/782,690
Method for etching photolithographically produced quartz crystal blanks for singulation
Inventors:
Kevin Haas, Robert S. Witte, Sang Hoon Kim
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Jan 16, 1997
Inventors
Kevin Haas
Robert S. Witte
Sang Hoon Kim
Assignee (at issue)
Motorola, 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.