Patent Assignment
Reel/Frame 031738/0175
Assignment of Assignor's Interest
Recorded: 2013-12-09
Pages: 3
Assignors
CHARI, RAVI V.J.
Executed: 2013-09-27
WIDDISON, WAYNE C.
Executed: 2013-10-03
WILHELM, SHARON D.
Executed: 2013-09-27
Assignee
IMMUNOGEN, INC.
830 WINTER STREET, WALTHAM, MASSACHUSETTS, 02451
Covered Property
(1)
Cytotoxic Agents Comprising New Ansamitocin Derivatives