F01L 2001/3444
Oil filters
Official title: {Oil filters}
F01L2001/3444 (Oil filters) appears on 131 US grants and 127 published applications in this corpus.
Search patents in F01L- Granted patents
- 131
- Published applications
- 127
- Assignees
- 51
- Inventors
- 214
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 11 | 5 |
| 2002 | 7 | 7 |
| 2003 | 5 | 6 |
| 2004 | 6 | 4 |
| 2005 | 4 | 7 |
| 2006 | 2 | 7 |
| 2007 | 4 | 3 |
| 2008 | 2 | 13 |
| 2009 | 7 | 7 |
| 2010 | 3 | 5 |
| 2011 | 4 | 2 |
| 2012 | 5 | 4 |
| 2013 | 2 | 6 |
| 2014 | 5 | 1 |
| 2015 | 6 | 4 |
| 2016 | 4 | 5 |
| 2017 | 3 | 10 |
| 2018 | 9 | 9 |
| 2019 | 9 | 6 |
| 2020 | 6 | 6 |
| 2021 | 4 | 2 |
| 2022 | 4 | 2 |
| 2023 | 1 | 2 |
| 2024 | 2 | 1 |
| 2025 | 4 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil passage control valve and valve timing varying device10 Feb 2026US 12,546,239 B2Mikuni Corporation
- Cam phase regulator assembly14 Oct 2025US 12,442,318 B2Schaeffler Technologies AG & Co. KG
- Fluid control valve unit and valve timing change device9 Sep 2025US 12,410,733 B2Mikuni Corporation
- Fluid control valve unit and valve timing changing device22 Jul 2025US 12,366,181 B2Mikuni Corporation
- Fluid control valve unit and valve timing changing device28 Jan 2025US 12,209,514 B2Mikuni Corporation
- Variable valve timing mechanism23 Jul 2026US 2026/0210276 A1Subaru Corporation
- Cam phase regulator assembly3 Jul 2025US 2025/0215815 A1Schaeffler Technologies AG & Co. KG
- Oil passage control valve and valve timing varying device26 Jun 2025US 2025/0207517 A1Mikuni Corporation
- Fluid control valve unit and valve timing change device28 Nov 2024US 2024/0392705 A1Mikuni Corporation
- Fluid control valve unit and valve timing changing device26 Oct 2023US 2023/0340897 A1Mikuni Corporation
Most cited
By later US patents
- System for regulating valve timing of internal combustion engine93US 5,924,395 AToyota Jidosha Kabushiki Kaisha · 1999
- Valve timing controlling device of internal combustion engine54US 5,957,095 AMitsubishi Denki Kabushiki Kaisha · 1999
- Cylinder head for variable valve timing45US 6,076,492 AYamaha Hatsudoki Kabushiki Kaisha · 2000
- Variable valve timing mechanism for engine38US 6,035,817 AYamaha Hatsudoki Kabushiki Kaisha · 2000
- Engine valve adjuster31US 5,797,363 AToyota Jidosha Kabushiki Kaisha · 1998