IP Library Granted Patent US 4,894,443
Granted Patent Utility
US 4,894,443 · App. 06/648,759

Toxin conjugates

Inventors: Lawrence Greenfield, Donald A. Kaplan, Danute E. Nitecki
Patented Case View Patent ↗
Granted: Jan 16, 1990 Filed: Sep 7, 1984
Inventors
Lawrence Greenfield
Donald A. Kaplan
Danute E. Nitecki
Assignee (at issue)
Cetus 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 4,894,443
App. No.
06/648,759
Filed
1984-09-07
Granted
1990-01-16
Kind
A