Patent Assignment
Reel/Frame 003806/0320
Assignment of Assignors Interest.
Recorded: 1980-10-17
Pages: 2
Assignee
CHEMED CORPORATION
DUBOIS TOWER, A CORP. OF DE, CINCINNATI, OHIO, 45202
Covered Property
(1)
Scale Inhibition
Patent:
4,255,259 →
Application:
06/076,810 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Mar 15, 1982
From: CHEMED CORPORATION, A CORP. OF DE
To: DEARBORN CHEMICAL COMPANY, A CORP. OF DE
Reel/Frame 003963/0418 →
Merger
Mar 19, 1986
From: DEARBORN CHEMICAL COMPANY
To: W.R. GRACE & CO.
Reel/Frame 004528/0776 →
Merger Effective Date: May 25, 1988 Connecticut
Aug 5, 1988
From: W.R. GRACE & CO., A CORP. OF CONN. (MERGED INTO); GRACE MERGER CORP., A CORP. OF CONN. (CHANGED TO)
To: W.R. GRACE & CO.-CONN.
Reel/Frame 004937/0001 →