F04C 28/04
Control of, monitoring of, or safety arrangements for, pumps or pumping installations
Official title: specially adapted for reversible pumps
F04C28/04 (Control of, monitoring of, or safety arrangements for, pumps or pumping installations) appears on 61 US grants and 57 published applications in this corpus.
Search patents in F04C- Granted patents
- 61
- Published applications
- 57
- Assignees
- 29
- Inventors
- 107
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 3 | 16 |
| 2006 | 10 | 5 |
| 2007 | 7 | 7 |
| 2008 | 1 | 1 |
| 2009 | 3 | 1 |
| 2010 | 1 | 2 |
| 2011 | 5 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 0 | 0 |
| 2017 | 1 | 4 |
| 2018 | 1 | 1 |
| 2019 | 3 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 0 |
| 2023 | 0 | 2 |
| 2024 | 2 | 2 |
| 2025 | 4 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Scroll compressor19 May 2026US 12,631,181 B2Kabushiki Kaisha Toyota Jidoshokki
- Pre-pressurized system with reverse rotation of pump for valve actuation16 Dec 2025US 12,497,957 B2Johnson Electric Motion Technology Canada Ltd.
- Pump with variable suction/discharge amount and drive device composed of the pump and driving method thereof9 Sep 2025US 12,410,793 B2CH Creative Co., Ltd.
- Pump device1 Jul 2025US 12,345,255 B2Toyota Jidosha Kabushiki Kaisha
- Dual gerotor apparatus, a powertrain assembley and an electrified vehicle27 May 2025US 12,313,067 B2Valeo Powertrain (Nanjing) Co., Ltd.
- Armahn Rotary Pump27 Aug 2026US 2026/0251143 A1
- Scroll compressor21 Aug 2025US 2025/0264101 A1Kabushiki Kaisha Toyota Jidoshokki
- Pre-pressurized system with reverse rotation of pump for valve actuation15 Feb 2024US 2024/0051367 A1Stackpole International Engineered Products, Ltd.
- A dual gerotor apparatus, a powertrain assembley and an electrified vehicle11 Jan 2024US 2024/0011483 A1Valeo Powertrain (Nanjing) Co., Ltd.
- Pump device2 Nov 2023US 2023/0349377 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Reversible pivoting vane rotary compressor for a valve-free oxygen concentrator41US 6,749,405 B22004
- Reversible compressor heat pump31US 4,367,638 AGeneral Electric Company · 1983
- Valve-free oxygen concentrator featuring reversible compressors27US 7,114,932 B12006
- Pivoting vane rotary compressor21US 6,371,745 B12002
- Reversible fixed vane rotary compressor having a reversing disk which carries the suction port17US 4,598,559 ACarrier Corporation · 1986