Granted Patent
Utility
US 6,111,138 · App. 09/361,710
Process for preparing urea
Inventors:
Julius G. T. Van Wijck, Jozef Hubert Meessen
Patented Case
View Patent ↗
Granted: Aug 29, 2000
Filed: Jul 28, 1999
Inventors
Julius G. T. Van Wijck
Jozef Hubert Meessen
Assignee (at issue)
DSM N.V.
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.