A61M 2205/7536
Allowing gas passage, but preventing liquid passage
Official title: allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
A61M2205/7536 (Allowing gas passage, but preventing liquid passage) appears on 810 US grants and 1,108 published applications in this corpus.
Search patents in A61M- Granted patents
- 810
- Published applications
- 1,108
- Assignees
- 386
- Inventors
- 1,696
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 3 |
| 2002 | 7 | 6 |
| 2003 | 3 | 9 |
| 2004 | 9 | 7 |
| 2005 | 2 | 8 |
| 2006 | 5 | 17 |
| 2007 | 5 | 14 |
| 2008 | 3 | 11 |
| 2009 | 8 | 42 |
| 2010 | 5 | 24 |
| 2011 | 16 | 37 |
| 2012 | 23 | 30 |
| 2013 | 40 | 40 |
| 2014 | 25 | 38 |
| 2015 | 24 | 53 |
| 2016 | 29 | 40 |
| 2017 | 31 | 54 |
| 2018 | 43 | 65 |
| 2019 | 44 | 72 |
| 2020 | 53 | 94 |
| 2021 | 51 | 96 |
| 2022 | 65 | 81 |
| 2023 | 64 | 61 |
| 2024 | 66 | 75 |
| 2025 | 55 | 84 |
| 2026 | 38 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus, system and method for fluid delivery6 Oct 2026US 12,751,899 B2DEKA Products Limited Partnership
- Balloon blocker for occlusion and suction29 Sep 2026US 12,746,382 B2C. R. Bard, Inc.
- Droplet device actuation from inhalation sensing15 Sep 2026US 12,734,312 B2Pneuma Respiratory, Inc.
- Systems and methods for controlling operation of negative pressure wound therapy apparatus25 Aug 2026US 12,714,775 B2Smith & Nephew, Inc.
- Multi-reservoir droplet delivery device25 Aug 2026US 12,714,804 B2Pneuma Respiratory, Inc.
- Powder inhalation system8 Oct 2026US 2026/0306758 A1Japan Tobacco Inc.
- Pre-primed giving set and compounding apparatus' and methods1 Oct 2026US 2026/0295179 A1Tessen Solutions Limited
- System and method for delivery of gas to a tissue1 Oct 2026US 2026/0295229 A1Beyond Air, Inc.
- Wound dressing and method of use24 Sep 2026US 2026/0283855 A1Smith & Nephew, Inc.
- Apparatuses and methods for negative pressure wound therapy24 Sep 2026US 2026/0283856 A1Smith & Nephew, Inc.
Most cited
By later US patents
- Apparatus for removing fluid from a wound1,682US 5,549,584 AThe Kendall Company · 1996
- Vacuum wound drainage system and lipids baffle therefor1,373US 4,655,754 AStryker Corporation · 1987
- Wound dressing1,355US 8,764,732 B2Smith & Nephew, Inc. · 2014
- Wound dressing1,225US 8,808,274 B2Smith & Nephew, Inc. · 2014
- Vacuum wound drainage system1,215US 4,826,494 AStryker Corporation · 1989