F04B 39/0207
With lubrication control systems
Official title: {with lubrication control systems}
F04B39/0207 (With lubrication control systems) appears on 163 US grants and 147 published applications in this corpus.
Search patents in F04B- Granted patents
- 163
- Published applications
- 147
- Assignees
- 89
- Inventors
- 379
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 8 |
| 2006 | 2 | 3 |
| 2007 | 2 | 0 |
| 2008 | 2 | 4 |
| 2009 | 2 | 6 |
| 2010 | 3 | 3 |
| 2011 | 3 | 7 |
| 2012 | 1 | 3 |
| 2013 | 3 | 6 |
| 2014 | 9 | 8 |
| 2015 | 2 | 9 |
| 2016 | 9 | 10 |
| 2017 | 8 | 10 |
| 2018 | 8 | 9 |
| 2019 | 6 | 9 |
| 2020 | 11 | 14 |
| 2021 | 8 | 6 |
| 2022 | 10 | 6 |
| 2023 | 8 | 5 |
| 2024 | 10 | 5 |
| 2025 | 2 | 5 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System ADN method for monitoring the oil level of an oil-lubricated compressor16 Jun 2026US 12,655,833 B2Knorr-Bremse Systeme FüR Schienenfahrzeuge GmbH
- Airend having a lubricant flow valve and controller28 Apr 2026US 12,612,914 B2Ingersoll-Rand Industrial U.S., Inc.
- Method for controlling a first reference temperature in a device for compressing gas30 Sep 2025US 12,429,044 B2Atlas Copco Airpower, Naamloze Vennootschap
- Lubrication and flushing of a fluid seal used with reactive materials18 Feb 2025US 12,228,125 B2Graco Minnesota Inc.
- Oil feeder and linear compressor including the same31 Dec 2024US 12,180,955 B2LG Electronics Inc.
- Oil distribution system for multiple-compressor systems20 Aug 2026US 2026/0243242 A1
- Suction pressure regulating valve and parallel compressor system18 Jun 2026US 2026/0169508 A1Danfoss (Tianjin) Ltd.
- Connection assembly and compressor30 Apr 2026US 2026/0117759 A1
- Electric pump and control device16 Apr 2026US 2026/0104043 A1Nidec Powertrain Systems Corporation
- Compressor system and refrigeration device29 Jan 2026US 2026/0028979 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Duplex compressor oil sump131US 4,505,650 ACarrier Corporation · 1985
- Combination sight glass and sump oil level sensor for a hermetic compressor102US 6,276,901 B1Tecumseh Products Company · 2001
- Compressor lubricating oil heater control89US 4,066,869 ACarrier Corporation · 1978
- Compressor control system and method82US 6,082,971 AIngersoll-Rand Company · 2000
- Capacity controllable compressor apparatus56US 5,094,598 AHitachi, Ltd. · 1992