G01N 33/2888
Lubricating oil characteristics
Official title: {Lubricating oil characteristics, e.g. deterioration (lubricating properties G01N33/30)}
G01N33/2888 (Lubricating oil characteristics) appears on 645 US grants and 640 published applications in this corpus.
Search patents in G01N- Granted patents
- 645
- Published applications
- 640
- Assignees
- 352
- Inventors
- 1,515
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 12 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 1 |
| 2002 | 12 | 12 |
| 2003 | 14 | 18 |
| 2004 | 13 | 22 |
| 2005 | 15 | 26 |
| 2006 | 24 | 19 |
| 2007 | 14 | 15 |
| 2008 | 12 | 18 |
| 2009 | 10 | 15 |
| 2010 | 9 | 20 |
| 2011 | 17 | 14 |
| 2012 | 8 | 18 |
| 2013 | 16 | 18 |
| 2014 | 17 | 25 |
| 2015 | 19 | 31 |
| 2016 | 21 | 45 |
| 2017 | 33 | 42 |
| 2018 | 25 | 35 |
| 2019 | 35 | 38 |
| 2020 | 40 | 36 |
| 2021 | 36 | 34 |
| 2022 | 27 | 30 |
| 2023 | 26 | 31 |
| 2024 | 23 | 35 |
| 2025 | 25 | 22 |
| 2026 | 26 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Determination apparatus, mobile object, computer-readable storage medium, and determination method15 Sep 2026US 12,736,070 B2Honda Motor Co., Ltd.
- System for detecting contamination condition of lubricating grease of mechanical component and bearing system8 Sep 2026US 12,730,101 B2Aktiebolaget Skf
- Locomotive sensor system for monitoring engine and lubricant health8 Sep 2026US 12,730,102 B2Transportation IP Holdings, LLC
- Monitoring the oil of a lubrication device25 Aug 2026US 12,716,368 B2Safran Aero Boosters SA
- Real-time system and method for determining remaining useful oil life in vehicles18 Aug 2026US 12,710,001 B2Cummins Inc.
- Water intrusion detection method, water intrusion detection device, and program for device using lubricant3 Sep 2026US 2026/0259188 A1Nsk Ltd.
- System for Predicting Physical Properties of Compressor Oil27 Aug 2026US 2026/0251632 A1Hitachi, Ltd.
- Fluid property monitoring system, method for detecting abnormality in detected value from fluid property sensor, and program20 Aug 2026US 2026/0243718 A1KYB Corporation
- Fluid condition sensing system and methods13 Aug 2026US 2026/0235542 A1Donaldson Company, Inc.
- Device, system, and method for oil-containing electrical power devices or transmission devices16 Jul 2026US 2026/0202352 A1EON Corporation
Most cited
By later US patents
- Modular data collection and analysis system379US 6,434,512 B1Reliance Electric Technologies, LLC · 2002
- 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
- Oil deterioration detector method and apparatus93US 4,646,070 ANissan Motor Co., Ltd. · 1987
- On-site oil analyzer86US 5,537,336 AOn-Site Analysis, Inc. · 1996