Granted Patent
Utility
US 5,004,598 · App. 07/358,924
Stable and quick-breaking topical skin compositions
Inventors:
Robert Y. Lochhead, Janet Y. Castaneda, Wilfred J. Hemker
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: May 31, 1989
Inventors
Robert Y. Lochhead
Janet Y. Castaneda
Wilfred J. Hemker
Assignee (at issue)
B. F. Goodrich 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.