C10N 2040/04
Oil-bath
Official title: Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
C10N2040/04 (Oil-bath) appears on 1,430 US grants and 1,637 published applications in this corpus.
Search patents in C10N- Granted patents
- 1,430
- Published applications
- 1,637
- Assignees
- 423
- Inventors
- 2,733
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 12 | 0 |
| 1978 | 13 | 0 |
| 1979 | 20 | 0 |
| 1980 | 15 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 14 | 0 |
| 1988 | 27 | 0 |
| 1989 | 31 | 0 |
| 1990 | 26 | 0 |
| 1991 | 30 | 0 |
| 1992 | 24 | 0 |
| 1993 | 27 | 0 |
| 1994 | 18 | 0 |
| 1995 | 12 | 0 |
| 1996 | 14 | 0 |
| 1997 | 28 | 0 |
| 1998 | 29 | 0 |
| 1999 | 22 | 0 |
| 2000 | 13 | 0 |
| 2001 | 21 | 7 |
| 2002 | 21 | 20 |
| 2003 | 24 | 32 |
| 2004 | 16 | 50 |
| 2005 | 11 | 58 |
| 2006 | 12 | 63 |
| 2007 | 11 | 66 |
| 2008 | 23 | 72 |
| 2009 | 16 | 74 |
| 2010 | 42 | 80 |
| 2011 | 39 | 68 |
| 2012 | 35 | 77 |
| 2013 | 66 | 77 |
| 2014 | 56 | 72 |
| 2015 | 53 | 68 |
| 2016 | 57 | 77 |
| 2017 | 41 | 67 |
| 2018 | 40 | 88 |
| 2019 | 44 | 111 |
| 2020 | 67 | 79 |
| 2021 | 83 | 69 |
| 2022 | 62 | 67 |
| 2023 | 51 | 60 |
| 2024 | 45 | 51 |
| 2025 | 42 | 49 |
| 2026 | 28 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lubricant additives for performance boosting1 Sep 2026US 12,723,216 B2Afton Chemical Corporation
- Structured assembly lubricant4 Aug 2026US 12,698,452 B2Vgp Ipco LLC
- Ball screw grease composition for rack-assisted electric power steering14 Jul 2026US 12,680,047 B2Kyodo Yushi Co., Ltd.
- Lubricants having improved low temperature, oxidation, and deposit control performance7 Jul 2026US 12,674,111 B2ExxonMobil Technology and Engineering Company
- Use of molybdenum compounds in driveline lubricants for reduced friction and copper corrosion23 Jun 2026US 12,662,647 B2Afton Chemical Corporation
- Lubricating oil composition8 Oct 2026US 2026/0308474 A1Eneos Corporation
- Electric vehicle fluids1 Oct 2026US 2026/0297448 A1Chevron Oronite Company LLC
- Nitrogen and sulfur-containing additives in electric vehicle fluids1 Oct 2026US 2026/0297449 A1Chevron Oronite Company LLC
- Polyalphaolefin based synthetic gear lubricants24 Sep 2026US 2026/0286242 A1BASF SE
- Friction modifier for automatic transmission fluid24 Sep 2026US 2026/0286243 A1Chevron Oronite Company LLC
Most cited
By later US patents
- Lubricating composition228US 4,956,122 AUniroyal Chemical Company, Inc. · 1990
- Novel VI improver, dispersant, and anti-oxidant additive and lubricating oil composition containing same122US 4,863,623 ATexaco Inc. · 1989
- Extended life functional fluid116US 3,933,659 AChevron Research Company · 1976
- Ashless dispersants formed from substituted acylating agents and their production and use115US 5,241,003 AEthyl Petroleum Additives, Inc. · 1993
- Nitrogenous dispersants, lubricants and concentrates containing said nitrogenous dispersants102US 4,454,059 AThe Lubrizol Corporation · 1984