A61K 47/38
Cellulose
Official title: Cellulose; Derivatives thereof
A61K47/38 (Cellulose) appears on 3,432 US grants and 6,636 published applications in this corpus.
Search patents in A61K- Granted patents
- 3,432
- Published applications
- 6,636
- Assignees
- 2,546
- Inventors
- 9,959
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 3 | 0 |
| 1989 | 9 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 12 | 0 |
| 1993 | 18 | 0 |
| 1994 | 7 | 0 |
| 1995 | 14 | 0 |
| 1996 | 11 | 0 |
| 1997 | 17 | 0 |
| 1998 | 22 | 0 |
| 1999 | 22 | 0 |
| 2000 | 14 | 0 |
| 2001 | 20 | 10 |
| 2002 | 22 | 36 |
| 2003 | 27 | 80 |
| 2004 | 24 | 85 |
| 2005 | 13 | 119 |
| 2006 | 27 | 76 |
| 2007 | 20 | 76 |
| 2008 | 19 | 89 |
| 2009 | 26 | 139 |
| 2010 | 38 | 146 |
| 2011 | 30 | 121 |
| 2012 | 63 | 156 |
| 2013 | 90 | 219 |
| 2014 | 144 | 284 |
| 2015 | 156 | 335 |
| 2016 | 168 | 316 |
| 2017 | 190 | 357 |
| 2018 | 181 | 386 |
| 2019 | 197 | 444 |
| 2020 | 273 | 492 |
| 2021 | 273 | 528 |
| 2022 | 314 | 493 |
| 2023 | 239 | 505 |
| 2024 | 238 | 456 |
| 2025 | 263 | 379 |
| 2026 | 159 | 309 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Injectable formulations in a method for treating pain6 Oct 2026US 12,751,943 B2Pelthos Therapeutics Inc.
- Topical anaesthetic composition having improved vasoconstrictor stability6 Oct 2026US 12,751,946 B2Animal Ethics Pty Ltd
- Amorphous nilotinib microparticles and uses thereof6 Oct 2026US 12,751,950 B2Flex Pharma, LLC
- Pharmaceutical formulation comprising polymeric micro-/nanofibers incorporating echinochrome A29 Sep 2026US 12,746,213 B2National and Kapodistrian University of Athens
- Treatment of low-grade intermediate-risk non-muscle-invasive bladder cancer with a thermally gelling pharmaceutical composition containing mitomycin22 Sep 2026US 12,740,940 B2Urogen Pharma Ltd.
- Suspension containing heterocyclidene acetamide derivative8 Oct 2026US 2026/0306401 A1Mochida Pharmaceutical Co., Ltd.
- Water-based liquid preparation8 Oct 2026US 2026/0306443 A1Senju USA, Inc.
- N-n-dimethyltryptamine (dmt) and dmt analog oral transmucosal film compositions, methods of making, and methods of use thereof8 Oct 2026US 2026/0306454 A1
- Amlodipine formulations8 Oct 2026US 2026/0306467 A1Azurity Pharmaceuticals, Inc.
- Polymorphic forms and formulations of leriglitazone8 Oct 2026US 2026/0306468 A1Minoryx Therapeutics S.L.
Most cited
By later US patents
- Preparation for treatment of spinal cord injury541US 9,040,062 B2Keio University · 2015
- Hydrogel for the therapeutic treatment of aneurysms446US 6,113,629 AMicrus Corporation · 2000
- Abuse-proofed dosage system297US 7,776,314 B2GrüNenthal GmbH · 2010
- Methods and compositions for deterring abuse of opioid containing dosage forms267US 7,201,920 B2Acura Pharmaceuticals, Inc. · 2007
- Powdery pharmaceutical composition for nasal administration248US 4,613,500 ATeijin Limited · 1986