Granted Patent
Utility
US 5,007,963 · App. 07/259,083
Novel process for the preparation of lead molybdate pigments and novel lead molybdate pigments
Inventors:
Leonardus Johannes Hubertus Erkens, Gerben P. Algra, Herman J. J. M. Geurts, Hubertus P. A. Gielkens
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Oct 17, 1988
Inventors
Leonardus Johannes Hubertus Erkens
Gerben P. Algra
Herman J. J. M. Geurts
Hubertus P. A. Gielkens
Assignee (at issue)
Ciba-Geigy
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.