F04B 39/12
Casings
Official title: Casings; Cylinders; Cylinder heads; Fluid connections
F04B39/12 (Casings) appears on 1,822 US grants and 2,258 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,822
- Published applications
- 2,258
- Assignees
- 738
- Inventors
- 3,748
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 10 | 0 |
| 1983 | 21 | 0 |
| 1984 | 7 | 0 |
| 1985 | 16 | 0 |
| 1986 | 10 | 0 |
| 1987 | 9 | 0 |
| 1988 | 12 | 0 |
| 1989 | 16 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 5 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 5 | 0 |
| 1996 | 14 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 17 | 0 |
| 2001 | 22 | 8 |
| 2002 | 28 | 30 |
| 2003 | 30 | 30 |
| 2004 | 15 | 51 |
| 2005 | 21 | 58 |
| 2006 | 16 | 39 |
| 2007 | 22 | 37 |
| 2008 | 15 | 47 |
| 2009 | 10 | 63 |
| 2010 | 12 | 78 |
| 2011 | 32 | 57 |
| 2012 | 43 | 57 |
| 2013 | 36 | 91 |
| 2014 | 58 | 101 |
| 2015 | 42 | 119 |
| 2016 | 69 | 138 |
| 2017 | 88 | 130 |
| 2018 | 119 | 138 |
| 2019 | 117 | 146 |
| 2020 | 128 | 141 |
| 2021 | 123 | 154 |
| 2022 | 117 | 120 |
| 2023 | 100 | 107 |
| 2024 | 114 | 100 |
| 2025 | 118 | 112 |
| 2026 | 63 | 106 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pressure relief system for a portable air pump and inflator system22 Sep 2026US 12,742,444 B2The Noco Company
- Greenhouse gas reduction with externally pressurized gas seal and gas lubrication for a reciprocating compressor22 Sep 2026US 12,742,445 B2
- Vertical type compressor and laundry treating apparatus having the same22 Sep 2026US 12,742,456 B2LG Electronics Inc.
- Adsorption dryer and method for operating adsorption dryer15 Sep 2026US 12,734,479 B2Kobelco Compressors Corporation
- Refrigerant compressor15 Sep 2026US 12,736,041 B2Secop GmbH
- Reciprocating compressor8 Oct 2026US 2026/0309141 A1LG Electronics Inc.
- Junction box and compressor1 Oct 2026US 2026/0302744 A1Nanchang Highly Electrical Appliances Co., Ltd.
- Portable Air Pump and Inflator System with a Vibration Damping Base24 Sep 2026US 2026/0286946 A1The Noco Company
- Modular effluent stream treatment apparatus and assembly method thereof10 Sep 2026US 2026/0266281 A1Bht Services Pte. Ltd.
- Fuel compressor20 Aug 2026US 2026/0243241 A1Phinia Delphi Luxembourg Sarl
Most cited
By later US patents
- Plunger pump fluid end186US 8,784,081 B12014
- Arrangement for portable pumping unit185US 6,557,704 B1KCI Licensing, Inc. · 2003
- Gas compressor construction and assembly109US 5,326,231 ABristol Compressors, Inc. · 1994
- Fluid end of a high pressure plunger pump105US 9,732,746 B2Gardner-Denver Company · 2017
- Pump housing coupling103US 8,182,212 B2Hayward Industries, Inc. · 2012