F04C 28/06
Control of, monitoring of, or safety arrangements for, pumps or pumping installations
Official title: specially adapted for stopping, starting, idling or no-load operation
F04C28/06 (Control of, monitoring of, or safety arrangements for, pumps or pumping installations) appears on 460 US grants and 414 published applications in this corpus.
Search patents in F04C- Granted patents
- 460
- Published applications
- 414
- Assignees
- 209
- Inventors
- 959
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 5 |
| 2002 | 18 | 16 |
| 2003 | 23 | 17 |
| 2004 | 6 | 9 |
| 2005 | 9 | 8 |
| 2006 | 4 | 18 |
| 2007 | 8 | 9 |
| 2008 | 9 | 25 |
| 2009 | 11 | 13 |
| 2010 | 10 | 19 |
| 2011 | 7 | 14 |
| 2012 | 16 | 15 |
| 2013 | 11 | 19 |
| 2014 | 11 | 17 |
| 2015 | 21 | 20 |
| 2016 | 12 | 15 |
| 2017 | 13 | 23 |
| 2018 | 19 | 24 |
| 2019 | 21 | 21 |
| 2020 | 16 | 27 |
| 2021 | 21 | 17 |
| 2022 | 17 | 12 |
| 2023 | 18 | 13 |
| 2024 | 21 | 11 |
| 2025 | 20 | 17 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Scroll compressor19 May 2026US 12,631,179 B2LG Electronics Inc.
- Scroll compressor19 May 2026US 12,631,181 B2Kabushiki Kaisha Toyota Jidoshokki
- Airend having a lubricant flow valve and controller28 Apr 2026US 12,612,914 B2Ingersoll-Rand Industrial U.S., Inc.
- Method for controlling a rotary screw compressor17 Feb 2026US 12,553,436 B2Gardner Denver Deutschland GmbH
- Multifunctional vacuum pump3 Feb 2026US 12,540,619 B2Jinhua Weike Industrial & Trading Co., Ltd
- Reducing power consumption in vacuum pumps1 Oct 2026US 2026/0298240 A1Edwards Limited
- Operation control method for engine driven compressor and engine driven compressor27 Aug 2026US 2026/0251144 A1Airman Corporation
- Gas Compressor20 Aug 2026US 2026/0243258 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Predicting tip seal wear in scroll pump23 Jul 2026US 2026/0210358 A1Agilent Technologies, Inc.
- Determining tip seal maintenance requirement in scroll pump23 Jul 2026US 2026/0210359 A1Agilent Technologies, Inc.
Most cited
By later US patents
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Compressor diagnostic system172US 6,615,594 B2Copeland Corporation · 2003
- Capacity modulated scroll machine162US 5,613,841 ACopeland Corporation · 1997
- Capacity modulated scroll machine156US 5,741,120 ACopeland Corporation · 1998
- Compressor diagnostic and recording system148US 6,406,265 B1Scroll Technologies · 2002