B01D 2255/2066
Praseodymium
B01D2255/2066 (Praseodymium) appears on 161 US grants and 216 published applications in this corpus.
Search patents in B01D- Granted patents
- 161
- Published applications
- 216
- Assignees
- 78
- Inventors
- 471
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 2 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 6 |
| 2010 | 3 | 2 |
| 2011 | 1 | 13 |
| 2012 | 0 | 8 |
| 2013 | 9 | 10 |
| 2014 | 12 | 17 |
| 2015 | 11 | 19 |
| 2016 | 14 | 10 |
| 2017 | 8 | 16 |
| 2018 | 8 | 19 |
| 2019 | 16 | 15 |
| 2020 | 16 | 14 |
| 2021 | 14 | 15 |
| 2022 | 6 | 12 |
| 2023 | 13 | 12 |
| 2024 | 9 | 11 |
| 2025 | 6 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oxygen storage/release material and method for producing the same17 Mar 2026US 12,576,394 B2Cataler Corporation
- Emission control catalyst article with enriched PGM zone, method and apparatus to produce the same10 Mar 2026US 12,569,839 B2BASF Mobile Emissions Catalysts LLC
- Porous composite and method of producing porous composite19 Aug 2025US 12,390,793 B2NGK Insulators, Ltd.
- Catalytically active particulate filter1 Jul 2025US 12,343,713 B2Umicore AG & Co. KG
- Metal oxide-based SCR catalyst composition3 Jun 2025US 12,318,762 B2BASF Mobile Emissions Catalysts LLC
- Improved three-way catalysts23 Jul 2026US 2026/0208106 A1
- Exhuast Gas Purification Catalyst16 Jul 2026US 2026/0199887 A1Cataler Corporation
- Compositions for and method of making methane abatement catalysts2 Oct 2025US 2025/0303396 A1Cdti Advanced Materials, Inc.
- Exhaust Gas Purifying Catalyst4 Sep 2025US 2025/0276286 A1Cataler Corporation
- Exhaust gas purification catalyst, method for purifying exhaust gas, and method for producing exhaust gas purification catalyst24 Jul 2025US 2025/0235824 A1Umicore Shokubai Japan Co., Ltd.
Most cited
By later US patents
- Rare earth containing catalyst composition76US 3,993,572 AEngelhard Minerals & Chemicals Corporation · 1976
- Pressure-balanced, catalyzed soot filter45US 7,722,829 B2BASF Catalysts LLC · 2010
- Diesel oxidation catalyst comprising palladium, gold and ceria44US 9,034,269 B2BASF SE · 2015
- Nitrogen oxide storage material and nitrogen oxide storing catalyst prepared therefrom42US 6,350,421 B1dmc2 Degussa Metals Catalysts Cerdec AG · 2002
- Catalysts for gasoline lean burn engines with improved NH3-formation activity35US 8,950,174 B2BASF SE · 2015