IP Library Granted Patent US 5,250,828
Granted Patent Utility
US 5,250,828 · App. 07/863,039

Structure of semiconductor memory device

Inventor: Toshihiro Honma
Patented Case View Patent ↗
Granted: Oct 5, 1993 Filed: Apr 3, 1992
Inventor
Toshihiro Honma
Assignee (at issue)
OKI ELECTRIC INDUSTRY 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,250,828
App. No.
07/863,039
Filed
1992-04-03
Granted
1993-10-05
Kind
A