Granted Patent
Utility
US 6,768,137 · App. 10/400,633
Laminated semiconductor substrate and optical semiconductor element
Inventors:
Mitsuhiro Kushibe, Yasuo Ohba, Rei Hashimoto, Keiji Takaoka
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Mar 28, 2003
Inventors
Mitsuhiro Kushibe
Yasuo Ohba
Rei Hashimoto
Keiji Takaoka
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.