Patent Assignment
Reel/Frame 006979/0621
Assignment of Assignor's Interest
Recorded: 1994-05-09
Pages: 3
Assignee
BETZ LABORATORIES, INC.
4636 SOMERTON ROAD, TREVOSE, PENNSYLVANIA, 19053-6783
Covered Property
(1)
Fluorescent Yellow 1,2,3,4-Tetrachloro-11H-Isoindolo-[2,1-a]- Benzimidazol-11-One Pigments
Patent:
5,856,508 →
Application:
08/153,550 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.