Patent Assignment
Reel/Frame 018844/0283
Assignment of Assignor's Interest
Recorded: 2007-01-26
Pages: 2
Assignee
IMMUNOGEN, INC.
128 SIDNEY STREET, CAMBRIDGE, MASSACHUSETTS, 02139-4239
Covered Property
(1)
Process for Preparation of Maytansinol
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.