Granted Patent
Utility
US 4,558,101 · App. 06/633,390
Process for the preparation of polymeric amine containing products
Inventors:
Felek Jachimowicz, P. E. Anders Hansson
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Jul 23, 1984
Inventors
Felek Jachimowicz
P. E. Anders Hansson
Assignee (at issue)
W. R. Grace & Co.
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.