Granted Patent
Utility
US 6,652,782 · App. 09/979,554
Multi-stage method for producing gas-filled microcapsules
Inventors:
Uwe Budde, Andreas Briel, Georg Rossling, Kai Lovis, Wolfgang Schmidt, Hans-Ulrich Moritz, Michael Gottfried, Jan-Peter Ingwersen
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Mar 27, 2002
Inventors
Uwe Budde
Andreas Briel
Georg Rossling
Kai Lovis
Wolfgang Schmidt
Hans-Ulrich Moritz
Michael Gottfried
Jan-Peter Ingwersen
Assignee (at issue)
SCHERING CORPORATION
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.