Granted Patent
Utility
US 5,714,267 · App. 08/626,280
Seed crystal of silicon single crystal
Inventors:
Norihisa Machida, Hisashi Furuya
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Apr 4, 1996
Inventors
Norihisa Machida
Hisashi Furuya
Assignees (at issue)
MISTUBISHI MATERIALS CORPORATION
Mitsubishi Materials Silicon Corp.
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.