F04B 39/0061
Using muffler volumes
Official title: {using muffler volumes}
F04B39/0061 (Using muffler volumes) appears on 281 US grants and 341 published applications in this corpus.
Search patents in F04B- Granted patents
- 281
- Published applications
- 341
- Assignees
- 137
- Inventors
- 617
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 8 |
| 2003 | 7 | 6 |
| 2004 | 7 | 16 |
| 2005 | 4 | 10 |
| 2006 | 7 | 13 |
| 2007 | 4 | 11 |
| 2008 | 2 | 8 |
| 2009 | 2 | 14 |
| 2010 | 5 | 12 |
| 2011 | 9 | 11 |
| 2012 | 11 | 8 |
| 2013 | 7 | 18 |
| 2014 | 8 | 15 |
| 2015 | 14 | 21 |
| 2016 | 10 | 14 |
| 2017 | 15 | 15 |
| 2018 | 16 | 24 |
| 2019 | 13 | 18 |
| 2020 | 19 | 17 |
| 2021 | 15 | 19 |
| 2022 | 14 | 22 |
| 2023 | 16 | 13 |
| 2024 | 20 | 12 |
| 2025 | 16 | 7 |
| 2026 | 2 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Acoustic silencer for a urine suction system4 Nov 2025US 12,458,525 B2Purewick Corporation
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- Compressor unit30 Sep 2025US 12,429,055 B2Daikin Industries, Ltd.
- Reciprocating compressor8 Oct 2026US 2026/0309141 A1LG Electronics Inc.
- Muffler assemblies for climate control systems9 Jul 2026US 2026/0194277 A1Trane International Inc.
- Oil-free air compressor and vehicle2 Jul 2026US 2026/0185513 A1Zhejiang Ruili Air Copressor Equipment Co., Ltd.
- Reciprocating compressor25 Jun 2026US 2026/0177045 A1LG Electronics Inc.
- Acoustic silencer for a urine suction system7 May 2026US 2026/0124066 A1Purewick Corporation
Most cited
By later US patents
- Multi-stage low pressure drop muffler78US 8,016,071 B1Trane International Inc. · 2011
- Suction accumulator76US 6,220,050 B1Tecumseh Products Company · 2001
- Suction muffler for compressor76US 6,446,454 B1LG Electronics Inc. · 2002
- Acoustic filter suitable for reciprocating compressor62US 9,145,879 B2Whirlpool Corporation · 2015
- Compressor with an acoustic attenuator device62US 9,752,564 B2Whirlpool Corporation · 2017