IP Library › Assignment 004212/0434
Patent Assignment
Reel/Frame 004212/0434

Assignment of Assignors Interest.

Recorded: 1984-01-20 Pages: 1
Assignors
LOONEY, JAMES R.
Executed: 1982-01-20
MC DOUGALL, LEE A.
Executed: 1982-01-14
Assignee
Covered Property (1)
Use of Esters of Sulfonic Acids as Anti-Sludge Agents During the Acidizing of Formations Containing Sludging Crude Oils
Patent: 4,442,014 →
Application: 06/344,606 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Feb 10, 1997
From: EXXON CHEMICAL PATENTS, INC.
To: NALCO/EXXON ENERGY CHEMICALS, LP
Reel/Frame 008376/0134 →
Change of Name Dec 7, 2001
From: NALCO/EXXON ENERGY CHEMICALS, L.P.
To: ONDEO NALCO ENERGY SERVICES, L.P.
Reel/Frame 012312/0854 →