Granted Patent
Utility
US 6,399,084 · App. 09/799,295
Method for diminishing wrinkles and fine lines of the skin by the topical application of &Dgr;5-androstene-3&bgr;-ol-7, 17 dione and metabolizable precursors thereof
Inventors:
Ronald J. Zenk, John L. Zenk
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Mar 5, 2001
Inventors
Ronald J. Zenk
John L. Zenk
Assignee (at issue)
Humatics 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.