Granted Patent
Utility
US 5,869,927 · App. 08/600,101
Fluorescent lamp with a mixed layer containing phosphor and metal oxide
Inventors:
Kazuhiro Matsuo, Yasuhiro Ikai, Juichi Sasada
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Feb 8, 1996
Inventors
Kazuhiro Matsuo
Yasuhiro Ikai
Juichi Sasada
Assignee (at issue)
Matsushita Electronics 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.