Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Rajeeva Singh — 21 Patents

IMImmunogen: 21 patents #11 of 119Top 10%
Framingham, MA: #65 of 1,271 inventorsTop 6%
Massachusetts: #5,325 of 88,656 inventorsTop 7%
Overall (All Time): #201,324 of 4,157,543Top 5%
21 Patents All Time
Rajeeva Singh has been granted 21 US patents while listed as an inventor at Immunogen. The first was granted in 2009 and the most recent in November 2022. Rajeeva Singh ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Rajeeva Singh in Framingham, MA, US.

Patents per Year

Patents granted per year, 2009 to 2022Bar chart with a peak of 4 patents in 2016.peak 42009: 1 patents20092011: 2 patents2012: 2 patents20122013: 1 patents2014: 1 patents20142015: 2 patents2016: 4 patents20162017: 1 patents2018: 1 patents20182019: 3 patents2020: 1 patents20202021: 1 patents2022: 1 patents2022

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11498979 Methods for preparing a purified maytansinoid conjugate in a solution Brenda A. Kellogg, Ravi V. J. Chari 2022-11-15 $19,904,000
11046762 Cross-linkers and their uses Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Wayne C. Widdison 2021-06-29 $20,854,000
10815309 Methods for preparing antibody-drug conjugates Brenda A. Kellogg, Ravi V. J. Chari 2020-10-27 $23,248,000
10494431 Cross-linkers and their uses Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Wayne C. Widdison 2019-12-03 $4,353,000
10364294 Methods of preparation of conjugates Nathan Elliott Fishkin, Michael Louis Miller, Wei Li 2019-07-30 $7,485,000
10233257 Methods for preparing antibody-drug conjugates Brenda A. Kellogg, Ravi V. J. Chari 2019-03-19 $7,354,000
9868791 Methods of preparation of conjugates Nathan Elliott Fishkin, Michael Louis Miller, Wei Li 2018-01-16 $19,824,000
9771432 Conjugation methods Brenda A. Kellogg, Ravi V. J. Chari 2017-09-26 $16,099,000
9498541 Cross-linkers and their uses Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Wayne C. Widdison 2016-11-22 $2,788,000
9376500 Conjugation methods Brenda A. Kellogg, Ravi V. J. Chari 2016-06-28 $4,268,000
9353127 Methods of preparation of conjugates Nathan Elliott Fishkin, Michael Louis Miller, Wei Li 2016-05-31 $11,870,000
9238690 Non-antagonistic EGFR-binding molecules and immunoconjugates thereof Julianto Setiady, Peter U. Park, Lingyun Rui, Thomas Chittenden 2016-01-19 $19,139,000
9150649 Potent conjugates and hydrophilic linkers Yelena Kovtun, Sharon D. Wilhelm, Ravi V. J. Chari 2015-10-06 $24,168,000
9061995 Cross-linkers and their uses Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Wayne C. Widdison 2015-06-23 $31,017,000
8624003 Methods for preparation of antibody-maytansinoid conjugates Brenda A. Kellogg, Ravi V. J. Chari 2014-01-07 $12,630,000
8613930 Cross-linkers and their uses Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Wayne C. Widdison 2013-12-24 $12,886,000
8268617 Anti-IGF-I receptor antibodies, DNAs, vectors, host cells and genetic constructs Daniel Tavares, Nancy E. Dagdigian 2012-09-18 $12,709,000
8236319 Cross-linkers and their uses Ravi V. J. Chari, Robert Yongxin Zhao, Yelena Kovtun, Wayne C. Widdison 2012-08-07 $9,920,000
8034904 Anti-IGF-I receptor antibody Daniel Tavares, Nancy E. Dagdigian 2011-10-11 $10,578,000
7985842 Anti-IGF-I receptor antibody Daniel Tavares, Nancy E. Dagdigian 2011-07-26 $15,748,000
7538195 Anti-IGF-I receptor antibody Daniel Tavares, Nancy E. Dagdigian 2009-05-26 $6,623,000