Granted Patent
Utility
US 6,492,773 · App. 09/881,327
Self-ballasted fluorescent lamp
Inventors:
Masayoshi Gyoten, Koji Miyazaki, Kenichiro Takahashi, Satoshi Kominami
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Jun 14, 2001
Inventors
Masayoshi Gyoten
Koji Miyazaki
Kenichiro Takahashi
Satoshi Kominami
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.