Granted Patent
Utility
US 5,393,797 · App. 08/259,205
Small cell foams containing a modified dense star polymer or dendrimer as a nucleating agent
Inventors:
David M. Hedstrand, Donald A. Tomalia
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Jun 13, 1994
Inventors
David M. Hedstrand
Donald A. Tomalia
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.