IP Library › Granted Patent US 5,659,008
Granted Patent Utility
US 5,659,008 · App. 08/421,621

Copolymers of polyaspartic acid and polycarboxylic acids

Inventors: Louis L. Wood, Gary J. Calton
Patented Case View Patent ↗
Granted: Aug 19, 1997 Filed: Apr 13, 1995
Inventors
Louis L. Wood
Gary J. Calton
Assignee (at issue)
Bayer Aktiengesellschaft

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 5,659,008
App. No.
08/421,621
Filed
1995-04-13
Granted
1997-08-19
Kind
A