Granted Patent
Utility
US 5,506,324 · App. 08/251,826
Method of preparation of crosslinked hydrophilic resins
Inventors:
Herbert Gartner, Roswitha Petri, Philippe Trijasson, deceased
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: May 31, 1994
Inventors
Herbert Gartner
Roswitha Petri
Philippe Trijasson, deceased
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.