Granted Patent
Utility
US 5,698,183 · App. 08/221,284
Compositions comprising high loading water-dispersible UVA and/or UVB light-absorbing copolymer
Inventors:
Matthew E. Langer, John F. Hessel, Ferial Khorshahi, Dennis Brian Sinfield
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Mar 31, 1994
Inventors
Matthew E. Langer
John F. Hessel
Ferial Khorshahi
Dennis Brian Sinfield
Assignee (at issue)
Lever Brothers Company, division of Conopco, 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.