F04B 39/16
Filtration
Official title: Filtration; Moisture separation
F04B39/16 (Filtration) appears on 385 US grants and 408 published applications in this corpus.
Search patents in F04B- Granted patents
- 385
- Published applications
- 408
- Assignees
- 266
- Inventors
- 881
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 0 |
| 2002 | 5 | 7 |
| 2003 | 11 | 8 |
| 2004 | 7 | 11 |
| 2005 | 2 | 8 |
| 2006 | 11 | 10 |
| 2007 | 5 | 12 |
| 2008 | 3 | 9 |
| 2009 | 3 | 8 |
| 2010 | 3 | 2 |
| 2011 | 4 | 5 |
| 2012 | 7 | 5 |
| 2013 | 4 | 13 |
| 2014 | 10 | 15 |
| 2015 | 6 | 21 |
| 2016 | 8 | 13 |
| 2017 | 13 | 18 |
| 2018 | 12 | 28 |
| 2019 | 23 | 35 |
| 2020 | 25 | 31 |
| 2021 | 29 | 36 |
| 2022 | 25 | 23 |
| 2023 | 27 | 31 |
| 2024 | 27 | 27 |
| 2025 | 29 | 19 |
| 2026 | 11 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adsorption dryer and method for operating adsorption dryer15 Sep 2026US 12,734,479 B2Kobelco Compressors Corporation
- Flow stream filtering method and system8 Sep 2026US 12,729,673 B2Le Groupe Dsd Inc.
- Air supply unit16 Jun 2026US 12,654,668 B2Kh Automotive Technologies Co., Ltd.
- Head module for air compressor and air compressor including same2 Jun 2026US 12,644,446 B2MDX Co., Ltd.
- Compressor system and filter housing19 May 2026US 12,629,625 B2Ingersoll-Rand Industrial U.S., Inc.
- Gas Compressor20 Aug 2026US 2026/0243258 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Hydrogen gas transport device and purging method for compressor30 Jul 2026US 2026/0218857 A1Kawasaki Jukogyo Kabushiki Kaisha
- Turbine30 Jul 2026US 2026/0221474 A1Wuxi Cummins Turbo Technologies Company Ltd.
- Compression system, method for starting up compression system, and method for stopping compression system16 Jul 2026US 2026/0201895 A1Mitsubishi Heavy Industries, Ltd.
- Reciprocating compressor25 Jun 2026US 2026/0177045 A1LG Electronics Inc.
Most cited
By later US patents
- Compressor unit and separator therefor245US 5,158,585 AHitachi, Ltd. · 1992
- Compression unit for a volumetric compressor without lubrification94US 10,830,225 B2Mgf S.R.L. · 2020
- Compressor control system and method82US 6,082,971 AIngersoll-Rand Company · 2000
- Compressed air control apparatus63US 5,600,953 AAisin Seiki Kabushiki Kaisha · 1997
- Hermetic motor-compressor unit for refrigeration circuits62US 4,793,775 AAspera, Inc. · 1988