Granted Patent
Utility
US 5,667,901 · App. 08/603,489
Crosslinkers based on 2-acetylglutarate esters of polyols
Inventors:
Philip Conrad Heidt, Charles H. Foster, J. Stewart Witzeman
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Feb 20, 1996
Inventors
Philip Conrad Heidt
Charles H. Foster
J. Stewart Witzeman
Assignee (at issue)
Eastman 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.