IP Library › Granted Patent US 4,814,488
Granted Patent Utility
US 4,814,488 · App. 07/111,648

4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives and process for preparing same

Inventors: Tohru Miura, Teruyuki Nagata
Patented Case View Patent ↗
Granted: Mar 21, 1989 Filed: Oct 23, 1987
Inventors
Tohru Miura
Teruyuki Nagata
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated

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 4,814,488
App. No.
07/111,648
Filed
1987-10-23
Granted
1989-03-21
Kind
A