F04B 39/128
Crankcases
Official title: {Crankcases}
F04B39/128 (Crankcases) appears on 85 US grants and 101 published applications in this corpus.
Search patents in F04B- Granted patents
- 85
- Published applications
- 101
- Assignees
- 79
- Inventors
- 232
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 3 |
| 2013 | 0 | 1 |
| 2014 | 3 | 6 |
| 2015 | 3 | 6 |
| 2016 | 2 | 13 |
| 2017 | 3 | 8 |
| 2018 | 7 | 5 |
| 2019 | 6 | 5 |
| 2020 | 9 | 11 |
| 2021 | 6 | 6 |
| 2022 | 5 | 5 |
| 2023 | 5 | 6 |
| 2024 | 4 | 2 |
| 2025 | 4 | 8 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air compressor for a vehicle air braking system28 Jul 2026US 12,692,853 B2KB Intellectual Property GmbH & Co. KG
- Head module for air compressor and air compressor including same2 Jun 2026US 12,644,446 B2MDX Co., Ltd.
- Compressor and refrigeration device3 Mar 2026US 12,565,887 B2Anhui Meizhi Precision Manufacturing Co., Ltd.
- Compressor vaporizer with discharge pipe in crankcase27 Jan 2026US 12,535,067 B2Advanced Flow Solutions Inc.
- Reciprocating pump power end with monolithic core27 Jan 2026US 12,535,069 B2Gd Energy Products, LLC
- Modular Pump and Pump Modules for Modular Pumps16 Jul 2026US 2026/0201874 A1Oxus America, Inc.
- Fluid handling systems including a compressor18 Jun 2026US 2026/0168484 A1Energy Recovery, Inc.
- Reciprocating pump power end with monolithic core21 May 2026US 2026/0139668 A1Gd Energy Products, LLC
- Systems and methods for capturing emissions with an internal combustion engine26 Mar 2026US 2026/0085677 A1Caterpillar Inc.
- Methane and emissions reduction system12 Feb 2026US 2026/0043519 A1Bhe Compression Services, LLC
Most cited
By later US patents
- Compression unit for a volumetric compressor without lubrification94US 10,830,225 B2Mgf S.R.L. · 2020
- Variable displacement compressor59US 4,073,603 ABorg-Warner Corporation · 1978
- Compressor for single or multi-stage operation45US 5,577,390 ACarrier Corporation · 1996
- Power end of a pump41US 10,871,227 B1Black Horse, LLC · 2020
- Motion conversion rotator apparatus and method27US 5,816,787 A1998