F16N 39/04
Arrangements for conditioning of lubricants in the lubricating system: by heating
Official title: by heating (heat-exchangers in general F28)
F16N39/04 (Arrangements for conditioning of lubricants in the lubricating system: by heating) appears on 63 US grants and 65 published applications in this corpus.
Search patents in F16N- Granted patents
- 63
- Published applications
- 65
- Assignees
- 64
- Inventors
- 142
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 1 | 6 |
| 2012 | 3 | 4 |
| 2013 | 2 | 4 |
| 2014 | 5 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 4 |
| 2017 | 2 | 3 |
| 2018 | 3 | 7 |
| 2019 | 1 | 2 |
| 2020 | 4 | 3 |
| 2021 | 6 | 0 |
| 2022 | 1 | 4 |
| 2023 | 1 | 5 |
| 2024 | 7 | 7 |
| 2025 | 6 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mechanical lubricating oil system with kidney loop system28 Jul 2026US 12,692,977 B2Stewart & Stevenson LLC
- Lubricant filter system, aircraft engine, and method of operating a lubricant system19 May 2026US 12,631,133 B2Pratt & Whitney Canada Corp.
- Tribological system25 Nov 2025US 12,480,618 B2Robert Bosch GmbH
- Lubricant reservoir, compressor system and heat pump15 Jul 2025US 12,359,852 B2SPH Sustainable Process Heat GmbH
- Warm-up oil management strategy10 Jun 2025US 12,326,161 B1Deere & Company
- Multi-function automatic grease injection pump including multiple discharge ports and having independently driven multi-stage structure24 Sep 2026US 2026/0287116 A1Ahwon Corporation
- An oil recovery system17 Sep 2026US 2026/0276146 A1Corsaer Holding B.V.
- Oil circulation system5 Mar 2026US 2026/0063244 A1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Warm-up oil management strategy12 Jun 2025US 2025/0188965 A1Deere & Company
- Grease discharge device and grease lubrication system24 Apr 2025US 2025/0129885 A1Makita Corporation
Most cited
By later US patents
- Crankcase heater control for hermetic refrigerant compressors38US 5,012,652 ACarrier Corporation · 1991
- Non-thermostatically controlled high power oil pan-heater28US 5,017,758 AToddco Research and Development Company, Inc. · 1991
- Self contained lubricating oil system for a centrifugal compressor26US 5,310,020 AIngersoll-Rand Company · 1994
- Process for removing water and/or other volatile impurities from lubricating oils and device for carrying out the process25US 4,830,745 A1989
- Compressors for heat pumps20US 4,208,883 AThe Electricity Council · 1980