IP Library › Granted Patent US 4,789,653
Granted Patent Utility
US 4,789,653 · App. 06/937,173

Method for production of ceramic composition

Inventors: Yasuyuki Ogata, Hidetsugu Ono, Seiji Yamanaka
Patented Case View Patent ↗
Granted: Dec 6, 1988 Filed: Dec 2, 1986
Inventors
Yasuyuki Ogata
Hidetsugu Ono
Seiji Yamanaka
Assignee (at issue)
Mitsubishi Mining & Cement 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 4,789,653
App. No.
06/937,173
Filed
1986-12-02
Granted
1988-12-06
Kind
A