IP Library › Granted Patent US 4,212,643
Granted Patent Utility
US 4,212,643 · App. 05/911,958

Transfer dye

Inventor: Hans P. Kolliker
Patented Case View Patent ↗
Granted: Jul 15, 1980 Filed: Jun 1, 1978
Inventor
Hans P. Kolliker
Assignee (at issue)
Ciba-Geigy

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 4,212,643
App. No.
05/911,958
Filed
1978-06-01
Granted
1980-07-15
Kind
A