Granted Patent
Utility
US 5,585,412 · App. 07/786,631
Process for preparing flexible CFC-free polyurethane foams using an encapsulated blowing agent
Inventors:
Frank S. Natoli, Kiran B. Chandalia
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Nov 1, 1991
Inventors
Frank S. Natoli
Kiran B. Chandalia
Assignee (at issue)
Olin 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.