Wayne C. Widdison — 39 Patents at Immunogen

Wayne C. Widdison has been granted 39 US patents while listed as an inventor at Immunogen. The first was granted in 2001 and the most recent in August 2025. Wayne C. Widdison ranks #81,245 of 4,157,543 US inventors in our database (top 2.0%). Patent records list Wayne C. Widdison in Belmont, MA, US.

Issued Patents All Time

Showing 1–25 of 39 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12390471	Maytansinoid derivatives with self-immolative peptide linkers and conjugates thereof	—	2025-08-19
11229639	Camptothecin derivatives	Ravi V. J. Chari, Wei Li, David Pleynet	2022-01-25	$18,412,000
11135308	Maytansinoid derivatives with self-immolative peptide linkers and conjugates thereof	—	2021-10-05	$8,903,000
11046762	Cross-linkers and their uses	Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Rajeeva Singh	2021-06-29	$20,854,000
10944190	Methods for the acylation of maytansinol	Robert Yongxin Zhao	2021-03-09	$32,498,000
10792372	Maytansinoid derivatives with self-immolative peptide linkers and conjugates thereof	—	2020-10-06	$16,338,000
10494431	Cross-linkers and their uses	Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Rajeeva Singh	2019-12-03	$4,353,000
10494423	Maytansinoid derivatives with peptide linker and conjugates thereof	—	2019-12-03	$4,353,000
10461449	Methods for the acylation of maytansinol	Robert Yongxin Zhao	2019-10-29	$8,355,000
10100062	Methods for the acylation of maytansinol	Robert Yongxin Zhao	2018-10-16	$17,186,000
9999680	Conjugates comprising cell-binding agents and maytansinoids as cytotoxic agents	—	2018-06-19	$15,068,000
9901647	Conjugates comprising cell-binding agents and cytotoxic agents	—	2018-02-27	$29,424,000
9796731	Methods for the acylation of maytansinol	Robert Yongxin Zhao	2017-10-24	$12,515,000
9518017	Purification of intermediates used in the preparation of heterobifunctional linkers	—	2016-12-13	$2,382,000
9498541	Cross-linkers and their uses	Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Rajeeva Singh	2016-11-22	$2,788,000
9469655	Methods for the acylation of maytansinol	Robert Yongxin Zhao	2016-10-18	$3,044,000
9289512	Maytansinoid derivatives with peptide linker and conjugates thereof	—	2016-03-22	$15,656,000
9090629	Cytotoxic agents comprising new ansamitocin derivatives	Ravi V. J. Chari, Sharon D. Wilhelm	2015-07-28	$37,405,000
9061995	Cross-linkers and their uses	Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Rajeeva Singh	2015-06-23	$31,017,000
9012629	Methods for the acylation of maytansinol	Robert Yongxin Zhao	2015-04-21	$7,595,000
8841425	Cytotoxic agents comprising new maytansinoids	Ravi V. J. Chari	2014-09-23	$5,591,000
8685920	Method of targeting specific cell populations using cell-binding agent maytansinoid conjugates linked via a non-cleavable linker, said conjugates and methods of making said conjugates	Ravi V. J. Chari	2014-04-01	$12,711,000
8613930	Cross-linkers and their uses	Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Rajeeva Singh	2013-12-24	$12,886,000
8563509	Method of targeting specific cell populations using cell-binding agent maytansinoid conjugates linked via a non-cleavable linker, said conjugates and methods of making said conjugates	Ravi V. J. Chari	2013-10-22	$6,878,000
8435528	Cytotoxic agents comprising new maytansinoids	Ravi V. J. Chari	2013-05-07	$12,766,000

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Wayne C. Widdison — 39 Patents

Issued Patents All Time

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