Patent Assignment
Reel/Frame 020253/0474
Assignment of Assignor's Interest
Recorded: 2007-12-13
Pages: 5
Assignors
WINDEBANK, MARK
Executed: 2007-11-08
HART, JARROD
Executed: 2007-11-08
ALARY, JEAN ANDRE
Executed: 2007-10-15
Assignee
IMERYS SERVICES S.A.S.
154 RUE DE L UNIVERSITE, PARIS, 75007, FRANCE
Covered Property
(1)
Proppants and Anti-Flowback Additives Made from Sillimanite Minerals, Methods of Manufacture, and Methods of Use
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 18, 2008
From: IMERYS SERVICES S.A.S.
To: IMERYS
Reel/Frame 022005/0686 →
Assignment of Assignor's Interest
Feb 25, 2019
From: IMERYS
To: IMERTECH SAS
Reel/Frame 048419/0763 →
Assignment of Assignor's Interest
Oct 11, 2019
From: IMERYS OILFIELD MINERALS, INC.
To: US CERAMICS LLC
Reel/Frame 050687/0024 →
Assignment of Assignor's Interest
Oct 11, 2019
From: IMERTECH SAS
To: IMERYS OILFIELD MINERALS, INC.
Reel/Frame 050720/0058 →