B01D 53/9481
Catalyst preceded by an adsorption device without catalytic function for temporary storage
Official title: {Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start}
B01D53/9481 (Catalyst preceded by an adsorption device without catalytic function for temporary storage) appears on 371 US grants and 287 published applications in this corpus.
Search patents in B01D- Granted patents
- 371
- Published applications
- 287
- Assignees
- 127
- Inventors
- 843
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 12 | 0 |
| 1995 | 20 | 0 |
| 1996 | 18 | 0 |
| 1997 | 16 | 0 |
| 1998 | 29 | 0 |
| 1999 | 22 | 0 |
| 2000 | 14 | 0 |
| 2001 | 14 | 7 |
| 2002 | 9 | 11 |
| 2003 | 12 | 11 |
| 2004 | 8 | 8 |
| 2005 | 6 | 9 |
| 2006 | 4 | 10 |
| 2007 | 9 | 9 |
| 2008 | 3 | 3 |
| 2009 | 1 | 19 |
| 2010 | 7 | 15 |
| 2011 | 7 | 8 |
| 2012 | 16 | 11 |
| 2013 | 8 | 9 |
| 2014 | 6 | 9 |
| 2015 | 12 | 19 |
| 2016 | 8 | 18 |
| 2017 | 17 | 18 |
| 2018 | 15 | 8 |
| 2019 | 10 | 18 |
| 2020 | 10 | 20 |
| 2021 | 18 | 5 |
| 2022 | 4 | 10 |
| 2023 | 6 | 16 |
| 2024 | 9 | 7 |
| 2025 | 6 | 4 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nitrogen oxides warm up control15 Sep 2026US 12,734,480 B1GM Global Technology Operations LLC
- Exhaust gas purification catalyst device7 Apr 2026US 12,594,525 B2Cataler Corporation
- Adsorbent, its preparation and use3 Feb 2026US 12,539,502 B2City University of Hong Kong
- Exhaust gas emissions abatement system13 Jan 2026US 12,521,696 B2Shell USA, Inc.
- Yttrium-doped catalyst support30 Dec 2025US 12,508,575 B2BASF Mobile Emissions Catalysts LLC
- A multifunctional catalyst system30 Jul 2026US 2026/0216650 A1Dinex A/S
- Multimetallic oxides for thermally reversible nox sorption9 Jul 2026US 2026/0192249 A1The Johns Hopkins University
- Catalyst comprising a sulfur-trap material for the treatment of an exhaust gas stream containing one or more of formaldehyde, nitrogen oxide (no), and hydrocarbons9 Jul 2026US 2026/0192253 A1
- Zeolite, production method thereof, hydrocarbon adsorbent and exhaust gas purifying catalyst25 Jun 2026US 2026/0175209 A1Mitsui Mining & Smelting Co., Ltd.
- Protective sulfur removal system for enhanced methane slip catalysts in sulfur-containing exhaust21 May 2026US 2026/0138084 A1Cdti Advanced Materials, Inc.
Most cited
By later US patents
- Method and apparatus for treating an engine exhaust gas stream154US 6,171,556 B2Engelhard Corporation · 2001
- Exhaust gas purification apparatus for an internal combustion engine149US 5,402,641 AToyota Jidosha Kabushiki Kaisha · 1995
- Dual converter engine exhaust system for reducing hydrocarbon emissions137US 5,125,231 ACorning Incorporated · 1992
- Exhaust purification device of internal combustion engine131US 5,437,153 AToyota Jidosha Kabushiki Kaisha · 1995
- Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof119US 6,105,365 AEngelhard Corporation · 2000