Granted Patent
Utility
US 5,359,043 · App. 07/871,473
Reactive dyes having a sulphonamido group
Inventors:
Stephen B. Bostock, Michael G. Hutchings, John A. Taylor
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Apr 21, 1992
Inventors
Stephen B. Bostock
Michael G. Hutchings
John A. Taylor
Assignee (at issue)
Zeneca Limited
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.