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Patent Assignment
Reel/Frame 021767/0265

Assignment of Assignor's Interest

Recorded: 2008-10-29 Pages: 2
Assignors
GREFHORST, CORNELIS
Executed: 2008-10-20
TZINTZOS, SPYRIDON
Executed: 2008-10-20
Assignee
S & B INDUSTRIAL MINERALS GMBH
SCHMIELENFELDSTRASSE 78, D-45772 MARL, GERMANY
Covered Property (1)
Method for Producing a Core Sand and/or Mold Sand for Foundry Purposes
Patent: 8,029,711 →
Application: 12/157,428 →
Publication: US 2009/0025606
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name/Correction of Address (Assignor) Aug 22, 2011
From: S & B INDUSTRIAL MINERALS GMBH
To: S & B INDUSTRIAL MINERALS GMBH
Reel/Frame 026806/0300 →
Assignment of Assignor's Interest Mar 4, 2019
From: IMERYS METALCASTING GERMANY GMBH
To: IMERTECH SAS
Reel/Frame 048492/0355 →
Change of Name Mar 4, 2019
From: S & B INDUSTRIAL MINERALS GMBH
To: IMERYS METALCASTING GERMANY GMBH
Reel/Frame 048498/0304 →
Assignment of Assignor's Interest Aug 26, 2025
From: IMERTECH SAS
To: IMERYS METALCASTING GERMANY GMBH
Reel/Frame 072116/0538 →