Granted Patent
Utility
US 6,002,390 · App. 08/976,436
Text input device and method
Inventor:
Toshiyuki Masui
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Nov 21, 1997
Inventor
Toshiyuki Masui
Assignee (at issue)
SONY GROUP CORPORATION
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.