F04B 39/126
Cylinder liners
Official title: {Cylinder liners}
F04B39/126 (Cylinder liners) appears on 79 US grants and 91 published applications in this corpus.
Search patents in F04B- Granted patents
- 79
- Published applications
- 91
- Assignees
- 67
- Inventors
- 225
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 3 |
| 2009 | 1 | 2 |
| 2010 | 0 | 6 |
| 2011 | 3 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 0 | 5 |
| 2015 | 1 | 5 |
| 2016 | 2 | 3 |
| 2017 | 4 | 5 |
| 2018 | 5 | 6 |
| 2019 | 6 | 6 |
| 2020 | 6 | 9 |
| 2021 | 3 | 10 |
| 2022 | 10 | 2 |
| 2023 | 7 | 3 |
| 2024 | 2 | 2 |
| 2025 | 6 | 8 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tire inflation apparatus14 Jul 2026US 12,679,150 B2
- Sliding material and gas compressor13 Jan 2026US 12,522,777 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Reduced heat exchange reciprocating compressor4 Nov 2025US 12,460,625 B2Officine Mario Dorin S.P.A.
- Asymmetric gas bearing bushing for thermo-pump21 Oct 2025US 12,448,963 B2KLA Corporation
- Air compressor cylinder liner8 Jul 2025US 12,352,264 B2Orbital Australia Pty Ltd
- Machine tool for removing worn-out liners from reciprocating compressor cylinders and related method of removal23 Jul 2026US 2026/0210353 A1Nuova Simat S.R.L.
- Reciprocating compressor and fluid injection system25 Dec 2025US 2025/0389263 A1Copeland Corporation
- Reciprocating Compressor And Fluid Injection System25 Dec 2025US 2025/0389264 A1Copeland Corporation
- Reciprocating Compressor And Fluid Injection System25 Dec 2025US 2025/0389265 A1Copeland Corporation
- Sliding material and gas compressor5 Jun 2025US 2025/0179387 A1Hitachi Industrial Equipment Systems Co., Ltd.
Most cited
By later US patents
- Compression unit for a volumetric compressor without lubrification94US 10,830,225 B2Mgf S.R.L. · 2020
- Isothermal compressor apparatus and method92US 4,242,878 ASplit Cycle Energy Systems, Inc. · 1981
- Piston compressor58US 4,393,752 ASulzer Brothers Limited · 1983
- Reciprocating pump45US 10,781,803 B2S,P.M. Flow Control, Inc. · 2020
- Vibrating compressor34US 5,704,771 ASawafuji Electric Co., Ltd. · 1998