Granted Patent
Utility
US 5,784,183 · App. 08/708,302
Semiconductor optical device and method for fabricating the same
Inventors:
Masahiro Aoki, Tsuyoshi Taniwatari, Makoto Suzuki, Takayuki Tsutsui
Patented Case
View Patent ↗
Granted: Jul 21, 1998
Filed: Sep 4, 1996
Inventors
Masahiro Aoki
Tsuyoshi Taniwatari
Makoto Suzuki
Takayuki Tsutsui
Assignee (at issue)
HITACHI, 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.