F04B 39/122
Cylinder block
Official title: {Cylinder block}
F04B39/122 (Cylinder block) appears on 255 US grants and 327 published applications in this corpus.
Search patents in F04B- Granted patents
- 255
- Published applications
- 327
- Assignees
- 138
- Inventors
- 575
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 10 |
| 2005 | 1 | 8 |
| 2006 | 2 | 4 |
| 2007 | 3 | 7 |
| 2008 | 3 | 6 |
| 2009 | 0 | 9 |
| 2010 | 2 | 10 |
| 2011 | 5 | 7 |
| 2012 | 3 | 12 |
| 2013 | 6 | 18 |
| 2014 | 14 | 23 |
| 2015 | 6 | 27 |
| 2016 | 12 | 27 |
| 2017 | 15 | 27 |
| 2018 | 24 | 15 |
| 2019 | 23 | 13 |
| 2020 | 18 | 19 |
| 2021 | 20 | 26 |
| 2022 | 21 | 22 |
| 2023 | 11 | 8 |
| 2024 | 16 | 10 |
| 2025 | 12 | 11 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Compressor system with a deformable cylinder main body for a puncture repair kit and method for sealing a vehicle tire with such a compressor system19 May 2026US 12,631,170 B2Continental Reifen Deutschland GmbH
- Fluid end of reciprocating pump14 Apr 2026US 12,601,346 B2Gd Energy Products, LLC
- Fuel compressor20 Aug 2026US 2026/0243241 A1Phinia Delphi Luxembourg Sarl
- Refrigerant compressor13 Aug 2026US 2026/0235336 A1Secop GmbH
- Fluid end of reciprocating pump23 Jul 2026US 2026/0210352 A1Gd Energy Products, LLC
- Reciprocating compressor with dampers2 Jul 2026US 2026/0185512 A1LG Electronics Inc.
- Oil-free air compressor and vehicle2 Jul 2026US 2026/0185513 A1Zhejiang Ruili Air Copressor Equipment Co., Ltd.
Most cited
By later US patents
- Plunger pump fluid end186US 8,784,081 B12014
- Gas compressor construction and assembly109US 5,326,231 ABristol Compressors, Inc. · 1994
- Method and equipment for improving the efficiency of compressors and refrigerators94US 10,961,995 B22021
- Integrated high capacity compressor56US 4,190,402 AInternational Telephone and Telegraph Corporation · 1980
- Cylinder sleeve for an air compressor55US 5,584,675 ADeVilbiss Air Power Company · 1996