Granted Patent
Utility
US 4,617,414 · App. 06/649,031
Process for the preparation of phosphate surfactants
Inventors:
Elvin R. Lukenbach, Richard Robert Tenore
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Sep 10, 1984
Inventors
Elvin R. Lukenbach
Richard Robert Tenore
Assignee (at issue)
Johnson & Johnson Baby Products 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.