Patent Assignment
Reel/Frame 005033/0946
Assignment of Assignors Interest.
Recorded: 1989-04-05
Pages: 2
Assignors
ALDCROFT, DEREK
Executed: 1988-10-12
NEWTON, JOHN R.
Executed: 1988-10-12
STANIER, PETER W.
Executed: 1988-10-12
Assignee
UNILEVER PATENT HOLDINGS B.V., A COMPANY OF THE NETHERLANDS
ROCHUSSENSTRAAT 78,, ROTTERDAM, NETHERLANDS
Covered Property
(1)
Silicas
Patent:
4,992,251 →
Application:
07/244,898 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 9, 1998
From: UNILEVER PATENT HOLDINGS B.V.
To: CROSFIELD LIMITED
Reel/Frame 009525/0922 →
Change of Name
Nov 27, 2007
From: CROSFIELD LIMITED
To: INEOS SILICAS LIMITED
Reel/Frame 020186/0803 →
Assignment of U.S. Patents
Jul 28, 2008
From: INEOS SILICAS LIMITED
To: PQ SILICAS UK LIMITED
Reel/Frame 021301/0001 →