IP Library › Assignment 003809/0022
Patent Assignment
Reel/Frame 003809/0022

Assignment of Assignors Interest.

Recorded: 1980-10-31 Pages: 3
Assignor
COLUMBIAN CHEMICALS COMPANY
Executed: 1980-07-31
Assignee
ETHYL CORPORATION, A CORP. OF VA.
330 SOUTH FOURTH ST., RICHMOND, VIRGINIA, 22317
Covered Properties (5)
Process for Preparing Aromatic Bisimides
Patent: 4,087,441 →
Application: 05/706,666 →
(Cyclo) Alkylenediammonium-Bis-Tetrahalophthalates
Patent: 4,092,345 →
Application: 05/709,987 →
Process for Preparing Nitrogen Compounds
Patent: 4,140,862 →
Application: 05/759,949 →
Process for Preparing Bisimides and Bisimides and Prepared Thereby
Patent: 4,125,535 →
Application: 05/766,098 →
Process for Preparing Nitrogen Compounds
Patent: 4,328,357 →
Application: 05/927,807 →
Related Assignments (2)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest. Mar 4, 1982
From: DOTSON, ANDERSON O., JR.; WADSWORTH, FRANCIS T.; WOLFORD, LIONEL T.
To: SAYTECH, INCORPORATED
Reel/Frame 003951/0369 →
Assignment of Assignor's Interest Aug 16, 1994
From: ETHYL CORPORATION
To: ALBERMARLE CORPORATION
Reel/Frame 007109/0340 →