Granted Patent
Utility
US 5,268,130 · App. 07/632,042
Melamine formaldehyde microencapsulation in aqueous solutions containing high concentrations of organic solvent
Inventor:
Michael Seitz
Patented Case
View Patent ↗
Granted: Dec 7, 1993
Filed: Dec 20, 1990
Inventor
Michael Seitz
Assignee (at issue)
Standard Register, Inc.
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.