Granted Patent
Utility
US 5,147,634 · App. 07/651,869
Heat generating permanent waving composition
Inventors:
Vikas Deshpande, John M. Walts
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Feb 7, 1991
Inventors
Vikas Deshpande
John M. Walts
Assignee (at issue)
EASTMAN KODAK 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.