Patent Assignment
Reel/Frame 004406/0854
Assignment of Assignors Interest.
Recorded: 1985-05-20
Pages: 1
Assignor
PAYNE, CHARLES C.
Executed: 1985-05-13
Assignee
NALCO CHEMICAL COMPANY
A DE CORP., OAK BROOK, ILLINOIS
Covered Property
(1)
Aqueous Silica Compositions for Polishing Silicon Wafers
Patent:
4,588,421 →
Application:
06/736,056 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 30, 1994
From: NALCO CHEMICAL COMPANY
To: RODEL, INC.
Reel/Frame 007153/0152 →
Assignment of Assignor's Interest
Feb 9, 2000
From: RODEL, INC.
To: RODEL HOLDINGS, INC.
Reel/Frame 010579/0674 →
Change of Name
Jun 15, 2004
From: RODEL HOLDINGS, INC.
To: ROHM AND HAAS ELECTRONIC MATERIALS CMP HOLDINGS, INC.
Reel/Frame 014725/0685 →