Granted Patent
Utility
US 6,576,352 · App. 09/820,687
Color-converting film and light-emitting apparatus using the same
Inventor:
Hiroyuki Hirai
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Mar 30, 2001
Inventor
Hiroyuki Hirai
Assignee (at issue)
Fujitsu 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.