Granted Patent
Utility
US 6,740,159 · App. 10/230,232
Method of making a fracture-resistant calcium fluoride single crystal and its use
Inventors:
Joerg Kandler, Ewald Moersen, Burkhard Speit, Harry J. Bauer, Thure Boehm, Eric Eva, Michael Thier, Hexin Wang, Frank Richter, Hans-Josef Paus
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Aug 28, 2002
Inventors
Joerg Kandler
Ewald Moersen
Burkhard Speit
Harry J. Bauer
Thure Boehm
Eric Eva
Michael Thier
Hexin Wang
Frank Richter
Hans-Josef Paus
Assignees (at issue)
Schott Glas
Carl Zeiss SMT GmbH
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.