Granted Patent
Utility
US 6,670,496 · App. 09/958,715
Process for the preparation of phenyl glyoxylic acid ester oximes
Inventor:
Rudolf Waditschatka
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Oct 10, 2001
Inventor
Rudolf Waditschatka
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.