IP Library › Assignment 004560/0981
Patent Assignment
Reel/Frame 004560/0981

Assignment of Assignors Interest.

Recorded: 1986-06-09 Pages: 1
Assignors
KEENER, IVIAN G.
Executed: 1985-05-23
NEWLOVE, JOHN C.
Executed: 1985-05-28
PORTNOY, ROBERT C.
Executed: 1985-05-23
FEHLER, DANIEL F.
Executed: 1985-05-23
POBER, KENNETH W.
Executed: 1985-04-09
Assignee
Covered Property (1)
Use of Mono and Polyalkylene Glycol Ethers as Agents for the Release of Differentially Stuck Drill Pipe
Patent: 4,614,235 →
Application: 06/723,608 →
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 →