Granted Patent
Utility
US 5,529,964 · App. 08/388,832
Modified molecular sieves by means of solid ion exchange
Inventors:
Jens Weitkamp, Stefan Ernst, Thomas Bock, Thomas Kromminga, Akos Kiss, Peter Kleinschmit
Patented Case
View Patent ↗
Granted: Jun 25, 1996
Filed: Feb 15, 1995
Inventors
Jens Weitkamp
Stefan Ernst
Thomas Bock
Thomas Kromminga
Akos Kiss
Peter Kleinschmit
Assignee (at issue)
Degussa AG
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.