Granted Patent
Utility
US 5,527,519 · App. 08/164,251
Finely divided, highly pure neutral zinc oxide powder, a process for its preparation and its use
Inventors:
Michael Miksits, Christoph Tiburtius, Jurgen Kischkewitz, Kai Butje, Albrecht Warth, Franz Herzig, Roland Langner
Patented Case
View Patent ↗
Granted: Jun 18, 1996
Filed: Dec 7, 1993
Inventors
Michael Miksits
Christoph Tiburtius
Jurgen Kischkewitz
Kai Butje
Albrecht Warth
Franz Herzig
Roland Langner
Assignees (at issue)
Bayer Aktiengesellschaft
Haarmann & Reimer 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.