IP Library Assignment 022159/0547
Patent Assignment
Reel/Frame 022159/0547

Assignment of Assignor's Interest

Recorded: 2009-01-27 Pages: 3
Assignors
WALTER, ULRICH
Executed: 2009-01-14
DICHTL, GOTTFRIED
Executed: 2009-01-14
Assignee
QVF ENGINEERING GMBH
HATTENBERGSTRASSE 36, 55122 MAINZ, GERMANY
Covered Property (1)
Method and System for Concentrating Waste Sulphuric Acids from Nitration Processes
Patent: 7,988,942 →
Application: 12/305,902 →
Publication: US 2010/0233069
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Sep 28, 2010
From: QVF ENGINEERING GMBH
To: DE DIETRICH PROCESS SYSTEMS GMBH
Reel/Frame 025053/0438 →