Granted Patent
Utility
US 5,294,230 · App. 07/831,822
Method for permanent waving and straightening of hair
Inventors:
Maw-Sheng Wu, Mary A. Pesce
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Feb 6, 1992
Inventors
Maw-Sheng Wu
Mary A. Pesce
Assignee (at issue)
The Gillette Company LLC
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.