Patent Assignment
Reel/Frame 003963/0418
Assignment of Assignors Interest.
Recorded: 1982-03-15
Pages: 2
Assignor
CHEMED CORPORATION, A CORP. OF DE
Executed: 1982-03-10
Assignee
DEARBORN CHEMICAL COMPANY, A CORP. OF DE
300 GENESEE STREET, LAKE ZURICH, ILLINOIS, 60047
Covered Properties
(18)
Organic Phosphorous Acid Compound-Chromate Corrosion Protection in Aqu Eous Systems
Patent:
3,431,217 →
Application:
04/581,151 →
Removing and Inhibiting Scale in Black Liquor Evaporators
Patent:
3,516,910 →
Application:
04/637,908 →
Cold Water Dispersible Emulsions of Filming Amines
Patent:
3,520,820 →
Application:
04/701,135 →
Method for Treating Cooling Water
Patent:
3,578,589 →
Application:
04/807,964 →
Organic Phosphonic Acid Compound Corrosion Protection in Aqueous Syste Ms
Patent:
3,803,047 →
Application:
05/300,936 →
Organic Phosphonic Acid Compound Corrosion Protection in Aqueous Syste Ms
Patent:
3,803,048 →
Application:
05/300,938 →
Polyacrylate-Polyphosphonic Acid Treatment in Aqueous Systems
Patent:
3,890,228 →
Application:
05/350,875 →
Method and Composition of Inhibiting Scale
Patent:
3,959,167 →
Application:
05/423,610 →
Method and Composition for Inhibiting Corrosion in Aqueous Systems
Patent:
3,935,125 →
Application:
05/482,941 →
Corrosion Inhibition
Patent:
4,098,720 →
Application:
05/649,126 →
Method of Inhibiting Scale
Patent:
4,048,066 →
Application:
05/742,521 →
Boiler Water Treatment
Patent:
4,067,690 →
Application:
05/767,151 →
Azole-Phosphate Corrosion Inhibiting Composition and Method
Patent:
4,134,959 →
Application:
05/826,009 →
Trolling Device
Patent:
4,254,573 →
Application:
06/033,308 →
Scale Inhibition
Patent:
4,255,259 →
Application:
06/076,810 →
Fly Ash Collection
Patent:
4,256,703 →
Application:
06/107,400 →
Improved Method for Deoxygenation of Water
Patent:
4,278,635 →
Application:
06/107,486 →
Scale Inhibition
Patent:
4,306,991 →
Application:
06/173,935 →
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Aug 27, 1980
From: DIXIT SHYAM N. S.; BAIN DOUGLAS I.; CARTER DAVID A.
To: CHEMED CORPORATION, A CORP. OF DEL.
Reel/Frame 003793/0846 →
Assignment of Assignors Interest.
Oct 17, 1980
From: HWA CHIH M.; CUISIA DIONISIO G.
To: CHEMED CORPORATION
Reel/Frame 003806/0320 →
Assignment of Assignors Interest.
Mar 5, 1981
From: KERST HERMAN
To: CHEMED CORPORATION, A CORP. OF DE.
Reel/Frame 003836/0296 →
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 →