IP Library › Granted Patent US 5,566,117
Granted Patent Utility
US 5,566,117 · App. 08/532,884

Reliable self-refreshing operation in a dram type of semiconductor memory device

Inventors: Yoshifumi Okamura, Shinji Sakuragi
Patented Case View Patent ↗
Granted: Oct 15, 1996 Filed: Sep 22, 1995
Inventors
Yoshifumi Okamura
Shinji Sakuragi
Assignee (at issue)
NEC 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.

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 5,566,117
App. No.
08/532,884
Filed
1995-09-22
Granted
1996-10-15
Kind
A