F01M 2011/14
For indicating the necessity to change the oil
Official title: {for indicating the necessity to change the oil}
F01M2011/14 (For indicating the necessity to change the oil) appears on 243 US grants and 225 published applications in this corpus.
Search patents in F01M- Granted patents
- 243
- Published applications
- 225
- Assignees
- 140
- Inventors
- 616
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 11 |
| 2003 | 10 | 8 |
| 2004 | 6 | 5 |
| 2005 | 5 | 5 |
| 2006 | 2 | 3 |
| 2007 | 2 | 1 |
| 2008 | 2 | 8 |
| 2009 | 2 | 3 |
| 2010 | 4 | 7 |
| 2011 | 3 | 4 |
| 2012 | 5 | 11 |
| 2013 | 8 | 6 |
| 2014 | 7 | 11 |
| 2015 | 5 | 9 |
| 2016 | 8 | 5 |
| 2017 | 8 | 10 |
| 2018 | 9 | 23 |
| 2019 | 15 | 17 |
| 2020 | 24 | 23 |
| 2021 | 15 | 11 |
| 2022 | 14 | 16 |
| 2023 | 12 | 8 |
| 2024 | 6 | 4 |
| 2025 | 7 | 11 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01M 2011/1473By considering temperatureIndexing code61
- F01M 2011/148By considering viscosityIndexing code43
- F01M 2011/1466By considering quantity of sootIndexing code37
- F01M 2011/1446By considering pressureIndexing code32
- F01M 2011/1486By considering duration of operationIndexing code27
- F01M 2011/1413By considering dielectric propertiesIndexing code22
- F01M 2011/1406By considering acidityIndexing code21
- F01M 2011/1453By considering oil quantityIndexing code20
All 14 subgroupsShow fewer
- F01M 2011/142By considering speedIndexing code18
- F01M 2011/146By considering moisture levelIndexing code16
- F01M 2011/1426By considering distanceIndexing code15
- F01M 2011/1493By considering total base number [tbn]Indexing code15
- F01M 2011/144By considering magnetic properties of the oilIndexing code12
- F01M 2011/1433By considering loadIndexing code6
Recent patents
- Locomotive sensor system for monitoring engine and lubricant health8 Sep 2026US 12,730,102 B2Transportation IP Holdings, LLC
- Oil condition estimation device and oil condition estimation method1 Sep 2026US 12,723,527 B2Isuzu Motors Limited
- Engine oil consumption detection using oil level and machine tilt25 Aug 2026US 12,716,813 B2Caterpillar Inc.
- Real-time system and method for determining remaining useful oil life in vehicles18 Aug 2026US 12,710,001 B2Cummins Inc.
- Controller, method, and engine system for engine crank control18 Aug 2026US 12,710,002 B2Cummins Power Generation Inc.
- Engine oil replacement cycle optimization apparatus and method8 Oct 2026US 2026/0309065 A1Hyundai Motor Company
- Fluid condition sensing system and methods13 Aug 2026US 2026/0235542 A1Donaldson Company, Inc.
- Engine oil consumption detection using oil level and machine tilt12 Mar 2026US 2026/0071934 A1Caterpillar Inc.
- Oil lubricant quality sensor for a lubricant supported electric motor and an oil cooled inverter12 Mar 2026US 2026/0071987 A1
- Management Device and Management System for Work Machine5 Mar 2026US 2026/0063615 A1Hitachi Construction Machinery Co., Ltd.
Most cited
By later US patents
- Intelligent fluid sensor for machinery diagnostics, prognostics, and control294US 7,581,434 B1Rockwell Automation Technologies, Inc. · 2009
- In-situ oil analyzer and methods of using same, particularly for continuous on-board analysis of diesel engine lubrication systems128US 5,604,441 ADetroit Diesel Corporation · 1997
- Service-interval display for motor vehicles88US 4,533,900 ABayerische Motoren Werke Aktiengesellschaft · 1985
- Method and apparatus for determining engine oil change intervals according to actual engine use87US 5,060,156 AFord Motor Company · 1991
- Oil condition trend algorithm79US 6,509,749 B1Delphi Technologies, Inc. · 2003