Granted Patent
Utility
US 4,018,729 · App. 05/630,404
Shaped article for conditioning hair a blend of water-soluble and water-insoluble polymers with interpenetrating networks
Inventors:
Joseph A. Faucher, Meyer R. Rosen
Patented Case
View Patent ↗
Granted: Apr 19, 1977
Filed: Nov 10, 1975
Inventors
Joseph A. Faucher
Meyer R. Rosen
Assignee (at issue)
Union Carbide 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.