IP Library › Granted Patent US 4,631,337
Granted Patent Utility
US 4,631,337 · App. 06/755,259

Hydrolytically-stable dense star polyamine

Inventors: Donald A. Tomalia, James R. Dewald
Patented Case View Patent ↗
Granted: Dec 23, 1986 Filed: Jul 15, 1985
Inventors
Donald A. Tomalia
James R. Dewald
Assignee (at issue)
THE DOW CHEMICAL COMPANY

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 4,631,337
App. No.
06/755,259
Filed
1985-07-15
Granted
1986-12-23
Kind
A