F02B 33/34
With rotary pumps
Official title: with rotary pumps (with cell-type pressure exchangers or the like F02B33/42)
F02B33/34 (With rotary pumps) appears on 1,014 US grants and 999 published applications in this corpus.
Search patents in F02B- Granted patents
- 1,014
- Published applications
- 999
- Assignees
- 300
- Inventors
- 1,819
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 15 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 14 | 0 |
| 1993 | 19 | 0 |
| 1994 | 11 | 0 |
| 1995 | 15 | 0 |
| 1996 | 9 | 0 |
| 1997 | 1 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 21 | 0 |
| 2001 | 17 | 9 |
| 2002 | 19 | 16 |
| 2003 | 20 | 15 |
| 2004 | 16 | 29 |
| 2005 | 18 | 22 |
| 2006 | 17 | 26 |
| 2007 | 11 | 26 |
| 2008 | 9 | 29 |
| 2009 | 18 | 20 |
| 2010 | 22 | 36 |
| 2011 | 14 | 35 |
| 2012 | 28 | 32 |
| 2013 | 27 | 18 |
| 2014 | 28 | 32 |
| 2015 | 24 | 56 |
| 2016 | 29 | 150 |
| 2017 | 54 | 110 |
| 2018 | 102 | 85 |
| 2019 | 97 | 73 |
| 2020 | 80 | 74 |
| 2021 | 55 | 35 |
| 2022 | 48 | 23 |
| 2023 | 27 | 21 |
| 2024 | 23 | 13 |
| 2025 | 11 | 13 |
| 2026 | 8 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Supercharger22 Sep 2026US 12,742,412 B2Eaton Intelligent Power Limited
- System and methods for stabilization of DC bus voltage in a hybrid-electric aircraft18 Aug 2026US 12,710,009 B2VerdeGo Aero, Inc.
- Port assembly for 2-stroke diesel engine9 Jun 2026US 12,650,106 B2DeltaHawk Engines, Inc.
- Electric compressor assembly2 Jun 2026US 12,644,471 B2Garrett Transportation I Inc.
- Compressor cover, centrifugal compressor, turbocharger, method for manufacturing compressor cover, and diffuser for centrifugal compressor21 Apr 2026US 12,607,199 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Centrifugal compressor and turbocharger13 Aug 2026US 2026/0235140 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Socket with laser induced friction surfaces6 Nov 2025US 2025/0339939 A1Zpe Licensing Inc.
- Electric compressor assembly30 Oct 2025US 2025/0334132 A1Garrett Transportation I Inc.
- Internal combustion engine, arrangement, method and computer program product23 Oct 2025US 2025/0327429 A1
- Internal combustion engine transient response9 Oct 2025US 2025/0314212 A1Caterpillar Inc.
Most cited
By later US patents
- Engine with combustion and expansion of the combustion gases within the combustor155US 6,817,185 B2innogy SE · 2004
- Motor-driven centrifugal air compressor with internal cooling airflow134US 6,102,672 ATurbodyne Systems, Inc. · 2000
- Multiple stage supercharging system131US 5,586,540 A1996
- Energy recovery system for large motor vehicles97US 5,121,607 A1992
- Spark-assist type self-ignition engine92US 6,293,246 B1Toyota Jidosha Kabushiki Kaisha · 2001