B01D 53/9427
For removing nitrous oxide
Official title: {for removing nitrous oxide}
B01D53/9427 (For removing nitrous oxide) appears on 37 US grants and 51 published applications in this corpus.
Search patents in B01D- Granted patents
- 37
- Published applications
- 51
- Assignees
- 23
- Inventors
- 162
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 3 | 6 |
| 2014 | 3 | 1 |
| 2015 | 2 | 3 |
| 2016 | 3 | 1 |
| 2017 | 3 | 3 |
| 2018 | 0 | 4 |
| 2019 | 2 | 4 |
| 2020 | 5 | 5 |
| 2021 | 5 | 3 |
| 2022 | 1 | 1 |
| 2023 | 4 | 3 |
| 2024 | 2 | 4 |
| 2025 | 3 | 1 |
| 2026 | 0 | 5 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Catalyst for simultaneously inhibiting emission of ammonia and nitrous oxide14 Oct 2025US 12,440,827 B2Korea Research Institute of Chemical Technology
- Exhaust gas treatment system2 Sep 2025US 12,403,425 B2GM Global Technology Operations LLC
- Preparation of SCR catalyst comprising Cu and Fe-exchanged zeolite, said catalyst, system comprising said catalyst and exhaust gas treatment using such29 Jul 2025US 12,372,020 B2BASF SE
- Catalyst for direct NOx decomposition and a method for making and using the catalyst10 Dec 2024US 12,161,971 B2Toyota Motor Engineering & Manufacturing North America, Inc.
- Low temperature NOx reduction using H2-SCR for diesel vehicles27 Aug 2024US 12,071,882 B2BASF SE
- System for treating exhaust gas from nitrogen-containing-fuel- or hydrogen-combustor6 Aug 2026US 2026/0225040 A1Johnson Matthey Public Limited Company
- Reducing the content of nox and n2o in the offgas from firing plants operated with nh3 for catalytic decomposition of nh330 Jul 2026US 2026/0216648 A1
- Reduction of nox and n2o in the exhaust gas of ship motors operated using nh330 Jul 2026US 2026/0216649 A1
- Multi-phase catalyst system for sustainable reduction of nitrous oxide emissions25 Jun 2026US 2026/0175207 A1
- Flue gas treatment device and design method of flue gas treatment device1 Jan 2026US 2026/0002460 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- N2O removal from automotive exhaust for lean/rich systems20US 10,919,025 B2BASF SE · 2021
- Combined urea hydrolysis and selective catalytic reduction for emissions control20US 10,934,918 B1PACCAR Inc · 2021
- Methods for controlling nitrous oxide emissions18US 8,883,102 B1Ford Global Technologies, LLC · 2014
- Method of depleting nitrous oxide in exhaust gas after-treatment for lean-burn engines9US 8,512,658 B2Umicore AG & Co. KG · 2013
- Catalyst materials for NO oxidation9US 9,138,725 B2BASF SE · 2015