B01D 2255/707
Additives or dopants
B01D2255/707 (Additives or dopants) appears on 31 US grants and 52 published applications in this corpus.
Search patents in B01D- Granted patents
- 31
- Published applications
- 52
- Assignees
- 36
- Inventors
- 149
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2011 | 0 | 1 |
| 2012 | 0 | 3 |
| 2013 | 2 | 5 |
| 2014 | 0 | 1 |
| 2015 | 2 | 3 |
| 2016 | 1 | 5 |
| 2017 | 2 | 3 |
| 2018 | 2 | 8 |
| 2019 | 6 | 5 |
| 2020 | 3 | 3 |
| 2021 | 4 | 2 |
| 2022 | 1 | 4 |
| 2023 | 2 | 4 |
| 2024 | 3 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Method for manufacturing gasoline particulate filter10 Feb 2026US 12,544,739 B2Johnson Matthey Public Limited Company
- Carbon-coated nickel oxide nanocomposite material, preparation method therefor and use thereof20 Jan 2026US 12,528,077 B2China Petroleum & Chemical Corporation
- Exhaust gas purification catalyst8 Jul 2025US 12,350,653 B2Mitsui Mining & Smelting Co., Ltd.
- Method and apparatus for air treatment employing catalyst material17 Sep 2024US 12,092,362 B2Bluezone IP Holding LLC
- Photocatalyst for air purification, and ceramic catalyst filter and air purification device including the same20 Aug 2024US 12,064,536 B2Samsung Electronics Co., Ltd.
- Complete oxidation catalysts for dilute alkanes1 Oct 2026US 2026/0295521 A1Icarus Technology LLC
- Reduction of nox emissions from semiconductor process tools17 Sep 2026US 2026/0273463 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Catalytic gasoline particulate filter30 Oct 2025US 2025/0334066 A1Johnson Matthey Public Limited Company
- Catalytic article comprising vanadium-based catalyst and molecular sieve-based catalyst23 May 2024US 2024/0167410 A1BASF SE
- Exhaust gas purification catalyst25 Jan 2024US 2024/0024816 A1Cataler Corporation
Most cited
By later US patents
- Platinum group metal (PGM) catalysts for automotive emissions treatment9US 10,201,804 B2BASF SE · 2019
- Rhodium-containing catalysts for automotive emissions treatment5US 10,183,276 B2BASF SE · 2019
- Gas purification using photocatalytic vortex-suspended particles4US 8,431,098 B2Empire Technology Development LLC · 2013
- Photocatalytic devices3US 9,205,169 B1Dust Free, LP · 2015
- Low phosphorus chabazites2US 9,254,481 B2Johnson Matthey Public Limited Company · 2016