A61K 31/435
Having six-membered rings with one nitrogen as the only ring hetero atom
Official title: having six-membered rings with one nitrogen as the only ring hetero atom
A61K31/435 (Having six-membered rings with one nitrogen as the only ring hetero atom) appears on 36,659 US grants and 64,561 published applications in this corpus.
Search patents in A61K- Granted patents
- 36,659
- Published applications
- 64,561
- Assignees
- 13,484
- Inventors
- 91,108
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 91 | 0 |
| 1977 | 83 | 0 |
| 1978 | 67 | 0 |
| 1979 | 34 | 0 |
| 1980 | 42 | 0 |
| 1981 | 43 | 0 |
| 1982 | 45 | 0 |
| 1983 | 45 | 0 |
| 1984 | 58 | 0 |
| 1985 | 50 | 0 |
| 1986 | 69 | 0 |
| 1987 | 83 | 0 |
| 1988 | 117 | 0 |
| 1989 | 136 | 0 |
| 1990 | 175 | 0 |
| 1991 | 160 | 0 |
| 1992 | 142 | 0 |
| 1993 | 227 | 0 |
| 1994 | 176 | 0 |
| 1995 | 227 | 0 |
| 1996 | 312 | 0 |
| 1997 | 441 | 0 |
| 1998 | 435 | 0 |
| 1999 | 562 | 0 |
| 2000 | 517 | 0 |
| 2001 | 631 | 248 |
| 2002 | 658 | 1020 |
| 2003 | 622 | 1453 |
| 2004 | 487 | 1693 |
| 2005 | 432 | 1598 |
| 2006 | 509 | 1663 |
| 2007 | 406 | 1585 |
| 2008 | 406 | 1571 |
| 2009 | 415 | 1619 |
| 2010 | 630 | 2067 |
| 2011 | 753 | 2008 |
| 2012 | 894 | 1996 |
| 2013 | 1330 | 2525 |
| 2014 | 1700 | 3162 |
| 2015 | 1997 | 3453 |
| 2016 | 2040 | 3516 |
| 2017 | 2273 | 3403 |
| 2018 | 2121 | 3291 |
| 2019 | 2169 | 3392 |
| 2020 | 2136 | 3496 |
| 2021 | 2032 | 3537 |
| 2022 | 1762 | 3497 |
| 2023 | 1564 | 3364 |
| 2024 | 1617 | 3461 |
| 2025 | 1628 | 3329 |
| 2026 | 1110 | 2614 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61K 31/44Non condensed pyridines22,237
- A61K 31/47Quinolines13,677
- A61K 31/4353Ortho- or peri-condensed with heterocyclic ring systems6,661
- A61K 31/439The ring forming part of a bridged ring system1,318
- A61K 31/468-azabicyclo [3.2.1] octane864
- A61K 31/465Nicotine610
- A61K 31/438The ring being spiro-condensed with carbocyclic or heterocyclic ring systems532
Recent patents
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Most cited
By later US patents
- Wound dressing with conformable elastomeric wound contact layer1,263US 5,445,604 ASmith and Nephew Associated Companies Limited · 1995
- Solid carriers for improved delivery of active ingredients in pharmaceutical compositions930US 6,248,363 B1Lipocine Inc. · 2001
- Method for manufacturing a porous ceramic scaffold having an organic/inorganic hybrid coating layer containing a bioactive factor777US 8,734,831 B2Snu R&Db Foundation · 2014
- Methods for treating multiple myeloma with 3-(4-amino-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidine-2,6-dione after stem cell transplantation733US 9,101,621 B2Celgene Corporation · 2015
- Solid carriers for improved delivery of active ingredients in pharmaceutical compositions684US 6,923,988 B2Lipocine Inc. · 2005