Granted Patent
Utility
US 4,895,876 · App. 07/028,521
Concentrated stable fluorochemical aqueous emulsions containing triglycerides
Inventors:
Frank K. Schweighardt, Charles Randall Kayhart
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Mar 20, 1987
Inventors
Frank K. Schweighardt
Charles Randall Kayhart
Assignee (at issue)
Air Products and Chemicals, Inc.
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.