B01D 2255/20784
Chromium
B01D2255/20784 (Chromium) appears on 117 US grants and 125 published applications in this corpus.
Search patents in B01D- Granted patents
- 117
- Published applications
- 125
- Assignees
- 105
- Inventors
- 418
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 10 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 2 | 2 |
| 2011 | 3 | 5 |
| 2012 | 1 | 6 |
| 2013 | 10 | 13 |
| 2014 | 5 | 9 |
| 2015 | 6 | 10 |
| 2016 | 6 | 10 |
| 2017 | 14 | 12 |
| 2018 | 3 | 7 |
| 2019 | 5 | 7 |
| 2020 | 7 | 8 |
| 2021 | 5 | 6 |
| 2022 | 4 | 5 |
| 2023 | 6 | 4 |
| 2024 | 4 | 4 |
| 2025 | 2 | 5 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel mill offgas separation and purification18 Aug 2026US 12,708,874 B2Air Products and Chemicals, Inc.
- Gas production apparatus, gas production system, steel production system, chemical manufacturing system, and gas production method with reduced carbon dioxide emission24 Mar 2026US 12,582,941 B2Sekisui Chemical Co., Ltd.
- Method for manufacturing catalyst for capture and conversion of carbon dioxide10 Mar 2026US 12,569,836 B2Lowcarbon Co., Ltd.
- Catalytic reaction apparatus comprising coating composition for catalyst and coating method7 Oct 2025US 12,434,227 B2Kuk Il Inntot Co., Ltd.
- Two-dimensional catalytic materials derived from metal-organic frameworks for VOC remediation5 Aug 2025US 12,377,385 B2The Hong Kong University of Science and Technology
- Multi-phase catalyst system for sustainable reduction of nitrous oxide emissions25 Jun 2026US 2026/0175207 A1
- Gas decompositoin catalyst, method of decomposing nitrous oxide gas using the same, and scrubber system for decomposing nitrous oxide gas using the same30 Apr 2026US 2026/0115660 A1Samsung Electronics Co., Ltd.
- Method for making nanoporous ceria and use thereof for air purification4 Dec 2025US 2025/0367639 A1
- Chemical Production Inside a Well Tubular/Casing19 Jun 2025US 2025/0197204 A1Baker Hughes Oilfield Operations LLC
- Mixed media desulfurization systems and fuel cell systems including the same30 Jan 2025US 2025/0038228 A1Bloom Energy Corporation
Most cited
By later US patents
- NOx decreasing apparatus for an internal combustion engine153US 5,412,946 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1995
- Catalytic process for reducing nitrogen oxides to nitrogen110US 4,085,193 ABabcock-Hitachi Kabushiki Kaisha · 1978
- Proces for selective removal of nitrogen oxides from waste gases39US 4,010,238 ASumitomo Chemical Company, Limited · 1977
- Catalytic reduction of NOx using methane in the presence of oxygen34US 5,149,512 AAir Products and Chemicals, Inc. · 1992
- Process for elimination of hexavalent chromium compounds on metallic substrates within zero-PGM catalyst systems34US 8,969,228 B2Clean Diesel Technologies, Inc. · 2015