IP Library › Assignment 004014/0335
Patent Assignment
Reel/Frame 004014/0335

Assignment of Assignors Interest.

Recorded: 1982-07-22 Pages: 1
Assignors
LUNDBERG, ROBERT D.
Executed: 1981-06-09
WALKER, THAD O.
Executed: 1981-06-17
O'FARRELL, CHARLES P.
Executed: 1981-07-07
Assignee
EXXON RESEARCH AND ENGINEERING COMPANY
A CORP. OF DE., NEW JERSEY
Covered Property (1)
Drilling Mud Viscosification Agents Based on Sulfonated Ionomers
Patent: 4,447,338 →
Application: 06/292,235 →
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Dec 7, 2001
From: NALCO/EXXON ENERGY CHEMICALS, L.P.
To: ONDEO NALCO ENERGY SERVICES, L.P.
Reel/Frame 012312/0854 →