Granted Patent
Utility
US 6,007,587 · App. 09/147,407
Leuco vat dye preparations in granule form
Inventors:
Manfred Gang, Rudolf Kruger, Peter Miederer, Eberhard Beckmann
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Dec 18, 1998
Inventors
Manfred Gang
Rudolf Kruger
Peter Miederer
Eberhard Beckmann
Assignee (at issue)
BASF SE
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.