Granted Patent
Utility
US 6,381,866 · App. 09/755,411
Continuous process and apparatus for the drying and gel formation of solvent-containing gel-forming polymers
Inventors:
Dietrich Gehrmann, Hartwig Kempkes
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Jan 5, 2001
Inventors
Dietrich Gehrmann
Hartwig Kempkes
Assignee (at issue)
Bayer Aktiengesellschaft
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.