Granted Patent
Utility
US 5,986,039 · App. 08/951,917
Branched polyesters prepared from hydroxyfunctional components with functionality in excess of two and their use in physiological separation vehicles
Inventors:
William Lawrence O'Brien, Alan C. Kilbarger
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Oct 16, 1997
Inventors
William Lawrence O'Brien
Alan C. Kilbarger
Assignee (at issue)
Henkel Limited
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.