Granted Patent
Utility
US 5,847,229 · App. 08/836,110
Process for the production of end-capped nonionic surfactants
Inventors:
Joaquim Bigorra Llosas, Nuria Bonastre, Antonio Trius Oliva, Rafael Pi Subirana
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Jun 9, 1997
Inventors
Joaquim Bigorra Llosas
Nuria Bonastre
Antonio Trius Oliva
Rafael Pi Subirana
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.