F04C 29/063
Sound absorbing materials
Official title: {Sound absorbing materials}
F04C29/063 (Sound absorbing materials) appears on 61 US grants and 65 published applications in this corpus.
Search patents in F04C- Granted patents
- 61
- Published applications
- 65
- Assignees
- 46
- Inventors
- 175
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 4 |
| 2016 | 2 | 4 |
| 2017 | 4 | 5 |
| 2018 | 1 | 10 |
| 2019 | 2 | 4 |
| 2020 | 6 | 6 |
| 2021 | 6 | 4 |
| 2022 | 7 | 2 |
| 2023 | 4 | 6 |
| 2024 | 3 | 1 |
| 2025 | 3 | 2 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Inlet silencer for a volumetric compressor and volumetric compressor equipped with it8 Sep 2026US 12,729,672 B2Atlas Copco Airpower, Naamloze Vennootschap
- Electrohydraulic drive system19 May 2026US 12,631,174 B2Hydac Drive Center GmbH
- Electric compressor15 Apr 2025US 12,276,279 B2Kabushiki Kaisha Toyota Jidoshokki
- Electric compressor1 Apr 2025US 12,264,675 B2Kabushiki Kaisha Toyota Jidoshokki
- Electric compressor28 Jan 2025US 12,209,588 B2Kabushiki Kaisha Toyota Jidoshokki
- Screw compressor, refrigeration system17 Sep 2026US 2026/0275988 A1Carrier Corporation
- Roots-type compressor system27 Aug 2026US 2026/0251145 A1
- Compressor-adapted enclosure and compressor unit6 Aug 2026US 2026/0226899 A1Mitsubishi Heavy Industries, Ltd.
- Blower9 Jul 2026US 2026/0194058 A1Atlas Copco (Wuxi) Compressor Co., Ltd.
- Screw compressor8 Jan 2026US 2026/0009383 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Mounting body127US 6,216,691 B1ResMed Limited · 2001
- Refrigeration compressor muffler81US 5,705,777 ACarrier Corporation · 1998
- Sound attenuating machinery cover47US 5,272,285 AScott Mfg., Inc. · 1993
- Compressor mounting36US 6,132,183 ACarrier Corporation · 2000
- Sound reduced rotary vane compressor27US 7,189,068 B2Gast Manufacturing, Inc. · 2007