F04B 39/123
Fluid connections
Official title: {Fluid connections}
F04B39/123 (Fluid connections) appears on 474 US grants and 612 published applications in this corpus.
Search patents in F04B- Granted patents
- 474
- Published applications
- 612
- Assignees
- 300
- Inventors
- 1,155
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 8 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 6 |
| 2003 | 2 | 5 |
| 2004 | 4 | 8 |
| 2005 | 5 | 16 |
| 2006 | 2 | 5 |
| 2007 | 3 | 7 |
| 2008 | 4 | 13 |
| 2009 | 3 | 23 |
| 2010 | 3 | 14 |
| 2011 | 9 | 9 |
| 2012 | 9 | 6 |
| 2013 | 11 | 16 |
| 2014 | 12 | 28 |
| 2015 | 9 | 28 |
| 2016 | 15 | 26 |
| 2017 | 13 | 36 |
| 2018 | 28 | 43 |
| 2019 | 30 | 51 |
| 2020 | 38 | 54 |
| 2021 | 39 | 39 |
| 2022 | 34 | 38 |
| 2023 | 28 | 39 |
| 2024 | 34 | 33 |
| 2025 | 42 | 33 |
| 2026 | 18 | 36 |
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
- Air compressor structure8 Sep 2026US 12,729,671 B2Unik World Industrial Co., Ltd.
- Cylinder assembly and compressor having the same25 Aug 2026US 12,716,408 B2Anhui Meizhi Compressor Co., Ltd.
- Multi-pressure integrated air pump18 Aug 2026US 12,710,032 B2Intex Marketing Ltd.
- Swappable integrated coolant module9 Jun 2026US 12,650,121 B2GM Global Technology Operations LLC
- Reciprocating compressor8 Oct 2026US 2026/0309141 A1LG Electronics Inc.
- Packaged gas compressor13 Aug 2026US 2026/0235128 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Connector for a vacuum pumping system30 Jul 2026US 2026/0218695 A1Edwards Limited
- Compressor unit30 Jul 2026US 2026/0218700 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Hydrogen gas transport device and purging method for compressor30 Jul 2026US 2026/0218857 A1Kawasaki Jukogyo Kabushiki Kaisha
Most cited
By later US patents
- Compression unit for a volumetric compressor without lubrification94US 10,830,225 B2Mgf S.R.L. · 2020
- Method and equipment for improving the efficiency of compressors and refrigerators94US 10,961,995 B22021
- Suction baffle for refrigeration compressor84US 5,055,010 ACopeland Corporation · 1991
- Muffler system for refrigeration compressor70US 4,401,418 AWhite Consolidated Industries, Inc. · 1983
- Hermetic motor-compressor unit for refrigeration circuits62US 4,793,775 AAspera, Inc. · 1988