F02D 2041/1417
Kalman filter
Official title: {Kalman filter}
F02D2041/1417 (Kalman filter) appears on 107 US grants and 56 published applications in this corpus.
Search patents in F02D- Granted patents
- 107
- Published applications
- 56
- Assignees
- 37
- Inventors
- 190
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 14 | 0 |
| 1999 | 7 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 4 |
| 2006 | 3 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 1 | 4 |
| 2011 | 3 | 1 |
| 2012 | 1 | 1 |
| 2013 | 4 | 3 |
| 2014 | 0 | 3 |
| 2015 | 3 | 4 |
| 2016 | 7 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 2 |
| 2020 | 1 | 4 |
| 2021 | 4 | 2 |
| 2022 | 6 | 3 |
| 2023 | 5 | 4 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine system with combustion control for reducing combustion variations7 Jul 2026US 12,674,428 B2Mazda Motor Corporation
- Method for evaluating an exhaust NOx sensor in the exhaust system of spark ignition internal combustion engine6 May 2025US 12,291,984 B2Volkswagen Aktiengesellschaft
- Monitoring system, method and vehicle comprising such a system, for detecting clogging through fouling of an air filter of an internal combustion engine15 Oct 2024US 12,116,963 B2DAF Trucks N. V.
- Electronic control device and engine control system1 Oct 2024US 12,104,548 B2Hitachi Astemo, Ltd.
- Adaptive fuel and charge consumption estimation in powertrain systems11 Jun 2024US 12,008,848 B2Garrett Transportation I Inc.
- Control Device10 Sep 2026US 2026/0266236 A1Astemo, Ltd.
- Engine control system and methods16 Apr 2026US 2026/0104016 A1Innio Jenbacher GmbH & Co OG
- Engine system with combustion control for reducing combustion variations2 Oct 2025US 2025/0305464 A1Mazda Motor Corporation
- Method for evaluating an exhaust nox sensor in the exhaust system of spark ignition internal combustion engine26 Sep 2024US 2024/0318586 A1Volkswagen Aktiengesellschaft
- Flow estimation for secondary air system25 Jan 2024US 2024/0026809 A1Garrett Transportation I Inc.
Most cited
By later US patents
- Engine with prediction/estimation air flow determination100US 5,270,935 AGeneral Motors Corporation · 1993
- Method for predicting R-step ahead engine state measurements99US 5,094,213 AGeneral Motors Corporation · 1992
- Software air-flow meter for an internal combustion engine93US 5,293,553 AGeneral Motors Corporation · 1994
- Apparatus with dynamic prediction of EGR in the intake manifold78US 5,273,019 AGeneral Motors Corporation · 1993
- Air/fuel ratio estimation system for internal combustion engine68US 5,548,514 AHonda Giken Kogyo Kabushiki Kaisha · 1996