Granted Patent
Utility
US 6,068,600 · App. 08/761,600
Use of hollow microcapsules
Inventors:
Richard A. Johnson, Paulus Antonius van der Wouw
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Dec 6, 1996
Inventors
Richard A. Johnson
Paulus Antonius van der Wouw
Assignee (at issue)
Quadrant Healthcare (UK) Limited
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.