Granted Patent
Utility
US 6,821,798 · App. 10/044,990
Semiconductor optical device and method for fabricating same
Inventors:
Satoshi Arakawa, Tatsuto Kurobe, Nariaki Ikeda, Takeharu Yamaguchi
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Jan 15, 2002
Inventors
Satoshi Arakawa
Tatsuto Kurobe
Nariaki Ikeda
Takeharu Yamaguchi
Assignee (at issue)
FURUKAWA ELECTRIC CO., 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.