F01N 2900/1621
Catalyst conversion efficiency
F01N2900/1621 (Catalyst conversion efficiency) appears on 287 US grants and 327 published applications in this corpus.
Search patents in F01N- Granted patents
- 287
- Published applications
- 327
- Assignees
- 96
- Inventors
- 666
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 2 | 8 |
| 2010 | 3 | 10 |
| 2011 | 3 | 13 |
| 2012 | 7 | 26 |
| 2013 | 15 | 13 |
| 2014 | 19 | 16 |
| 2015 | 23 | 43 |
| 2016 | 27 | 28 |
| 2017 | 29 | 24 |
| 2018 | 25 | 22 |
| 2019 | 23 | 19 |
| 2020 | 13 | 10 |
| 2021 | 15 | 15 |
| 2022 | 17 | 24 |
| 2023 | 23 | 15 |
| 2024 | 18 | 15 |
| 2025 | 16 | 11 |
| 2026 | 7 | 8 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Work vehicle and aftertreatment system therefor25 Aug 2026US 12,716,375 B2Deere & Company
- Aftertreatment heater management for efficient thermal management21 Apr 2026US 12,607,139 B2Cummins Inc.
- Systems and methods for compensating NOx sensor measurements to meet sufficiency requirements10 Mar 2026US 12,571,337 B2Cummins Inc.
- Systems and methods for predicting and controlling tailpipe NOx conversion and ammonia slip based on degradation of an aftertreatment system10 Feb 2026US 12,546,241 B2Cummins Inc.
- Systems and methods for monitoring nitrogen dioxide variability in an engine aftertreatment system10 Feb 2026US 12,546,242 B1Caterpillar Inc.
- Work vehicle and aftertreatment system therefor6 Aug 2026US 2026/0226857 A1Deere & Company
- Engine exhaust gas purification apparatus11 Jun 2026US 2026/0160213 A1Mazda Motor Corporation
- Zeolite catalysts with paired heteroatoms and methods thereof14 May 2026US 2026/0131318 A1BASF SE
- Systems and methods for predicting and controlling tailpipe nox conversion and ammonia slip based on degradation of an aftertreatment system30 Apr 2026US 2026/0117687 A1Cummins Inc.
- Verfahren zum Betreiben einer H2-Brennkraftmaschine30 Apr 2026US 2026/0117721 A1Robert Bosch GmbH
Most cited
By later US patents
- NOx cleaning apparatus and NOx cleaning method for internal combustion engine40US 6,755,014 B2Mitsubishi Fuso Truck and Bus Corporation · 2004
- Exhaust emission control device for internal combustion engine24US 7,997,070 B2Honda Motor Co., Ltd. · 2011
- Genset enclosure22US 8,601,772 B2Cummins Power Generation IP, Inc. · 2013
- Excess NH3 storage control for SCR catalysts19US 7,707,824 B2GM Global Technology Operations LLC · 2010
- Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions19US 8,528,319 B2Cummins IP, Inc. · 2013