B01D 2255/20761
Copper
B01D2255/20761 (Copper) appears on 1,181 US grants and 1,589 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,181
- Published applications
- 1,589
- Assignees
- 557
- Inventors
- 3,036
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 16 | 0 |
| 2000 | 18 | 0 |
| 2001 | 14 | 6 |
| 2002 | 15 | 7 |
| 2003 | 6 | 10 |
| 2004 | 10 | 13 |
| 2005 | 7 | 12 |
| 2006 | 6 | 13 |
| 2007 | 6 | 32 |
| 2008 | 10 | 22 |
| 2009 | 13 | 70 |
| 2010 | 30 | 69 |
| 2011 | 26 | 71 |
| 2012 | 41 | 67 |
| 2013 | 52 | 76 |
| 2014 | 65 | 114 |
| 2015 | 74 | 125 |
| 2016 | 69 | 101 |
| 2017 | 77 | 94 |
| 2018 | 73 | 111 |
| 2019 | 90 | 93 |
| 2020 | 79 | 92 |
| 2021 | 70 | 89 |
| 2022 | 65 | 65 |
| 2023 | 54 | 73 |
| 2024 | 51 | 81 |
| 2025 | 40 | 48 |
| 2026 | 28 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Selective catalytic reduction catalyst for the treatment of an exhaust gas8 Sep 2026US 12,728,409 B2BASF Mobile Emissions Catalysts LLC
- Catalyzed soot filter with reduced ammonia oxidation1 Sep 2026US 12,723,531 B2BASF Mobile Emissions Catalysts LLC
- System and method for pre-purification of a feed gas stream4 Aug 2026US 12,697,584 B2Linde Aktiengesellschaft
- Automotive 3-way catalyst system containing a tail pipe catalyst4 Aug 2026US 12,697,604 B2BASF Mobile Emissions Catalysts LLC
- Variable volume catalyst cell for catalytic oxidation of ethylene oxide emissions and related methodology16 Jun 2026US 12,654,133 B2CatOx, LLC.
- Method for capturing co2 and use of a metal-based surface for capturing co227 Aug 2026US 2026/0249243 A1Institut National De La Recherche Scientifique
- Catalyst composition, exhaust gas treatment method using the same, and exhaust gas treatment system including the same13 Aug 2026US 2026/0233206 A1Gwangju Institute of Science and Technology
- Synthesis of cha zeolitic materials, cha zeolitic materials obtainable therefrom and scr catalysts comprising the same13 Aug 2026US 2026/0234010 A1BASF Mobile Emissions Catalysts LLC
- Tail gas treatment by two stage adsorption with intermediate cooling30 Jul 2026US 2026/0216647 A1Saudi Arabian Oil 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
Most cited
By later US patents
- Method for reduction of nitrogen oxides with ammonia using promoted zeolite catalysts223US 4,961,917 AEngelhard Corporation · 1990
- Staged metal-promoted zeolite catalysts and method for catalytic reduction of nitrogen oxides using the same156US 5,516,497 AEngelhard Corporation · 1996
- NOx decreasing apparatus for an internal combustion engine153US 5,412,946 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1995
- Exhaust gas purification apparatus for an internal combustion engine149US 5,402,641 AToyota Jidosha Kabushiki Kaisha · 1995
- Catalyzed SCR filter and emission treatment system132US 7,229,597 B2BASFD Catalysts LLC · 2007