A61K 31/4439

Containing a five-membered ring with nitrogen as a ring hetero atom

Official title: containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole (nicotine A61K31/465)

A61K31/4439 (Containing a five-membered ring with nitrogen as a ring hetero atom) appears on 4,928 US grants and 9,191 published applications in this corpus.

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6 Oct 2026

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200864178
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201083261
2011100269
2012127275
2013197405
2014253488
2015343510
2016309520
2017376493
2018327470
2019352499
2020325478
2021271467
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2023196468
2024242529
2025206571
2026170484

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