Granted Patent
Utility
US 5,478,919 · App. 08/283,268
Aspartic acid copolymers and their preparation
Inventors:
Larry P. Koskan, James F. Kneller, Daniel A. Batzel
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Jul 29, 1994
Inventors
Larry P. Koskan
James F. Kneller
Daniel A. Batzel
Assignee (at issue)
Donlar Corporation
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.