Granted Patent
Utility
US 6,225,513 · App. 09/331,019
Process for the production of phenol and acetone from cumene
Inventors:
Vladimir Michailovitch Zakoshansky, Irina I. Vasilieva, Andrei Konstantinovitch Griaznov, Youry Nikolaevitch Youriev, Heinrich Van Barnefeld, Otto Gerlich, Michael Kleine-Boymann, Werner Kleinloh, Christian Michalik
Patented Case
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Granted: May 1, 2001
Filed: Sep 15, 1999
Inventors
Vladimir Michailovitch Zakoshansky
Irina I. Vasilieva
Andrei Konstantinovitch Griaznov
Youry Nikolaevitch Youriev
Heinrich Van Barnefeld
Otto Gerlich
Michael Kleine-Boymann
Werner Kleinloh
Christian Michalik
Assignees (at issue)
Illa International, L.L.C.
Phenolchemie 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.