Granted Patent
Utility
US 6,408,929 · App. 09/849,045
Method and apparatus for the production of precision castings by centrifugal casting with controlled solidification
Inventors:
Alok Choudhury, Harald Scholz, Matthias Blum, Georg Jarczyk, Marek Gorywoda, David Francis Lupton
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: May 4, 2001
Inventors
Alok Choudhury
Harald Scholz
Matthias Blum
Georg Jarczyk
Marek Gorywoda
David Francis Lupton
Assignees (at issue)
ALD VACUUM TECHNOLOGIES GMBH
W.C. Heraeus GmbH & Co. KG
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.