C01B 21/267
Means for preventing deterioration or loss of catalyst or for recovering lost
Official title: {Means for preventing deterioration or loss of catalyst or for recovering lost catalyst}
C01B21/267 (Means for preventing deterioration or loss of catalyst or for recovering lost) appears on 23 US grants and 14 published applications in this corpus.
Search patents in C01B- Granted patents
- 23
- Published applications
- 14
- Assignees
- 21
- Inventors
- 59
- Latest grant
- 1 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalyst support systems for ammonia oxidation burners1 Nov 2022US 11,485,639 B2Yara International Asa
- Burner basket for an ammonia oxidation burner4 Jun 2019US 10,308,510 B2thyssenkrupp AG
- Catalyst gauze and installation for the catalytic oxidation of ammonia16 Apr 2019US 10,258,966 B2Umicore AG & Co. KG
- Ammonia oxidation reactor with internal filter element30 May 2017US 9,663,366 B2BASF SE
- Device and process for catalytic gas phase reactions and use thereof23 Feb 2016US 9,266,081 B2Uhde GmbH
- Method for selectively recovering volatile pt or pd10 Sep 2026US 2026/0265057 A1Yara International Asa
- Catalyst support systems for ammonia oxidation burners29 Oct 2020US 2020/0338518 A1Yara International Asa
- Catalyst Gauze and Installation for the Catalytic Oxidation of Ammonia1 Feb 2018US 2018/0029014 A1Umicore AG & Co. KG
- Burner basket for an ammonia oxidation burner14 Sep 2017US 2017/0260051 A1thyssenkrupp AG
- Apparatus for minimizing bypass in ammonia oxidation burners of industrial plants with burner diameters of 2-7 m in natural- or forced-circulation boilers30 Jul 2015US 2015/0209754 A1Thyssenkrupp Industrial Solutions AG
Most cited
By later US patents
- Process for the manufacture of nitric oxide64US 4,774,069 AJohnson Matthey Public Limited Company · 1988
- Activated ignition promoters for metal catalyzed reactions22US 7,576,030 B2Rohm and Haas Company · 2009
- Low temperature light off ammonia oxidation19US 4,863,893 AEngelhard Corporation · 1989
- Wires incorporating a helical component, assemblies thereof, and use of said assemblies as catalyzer and/or to recover precious metals13US 5,699,680 AEngelhard-CLAL · 1997
- Electrical commutators and slip-rings12US 4,019,076 ANational Research Development Corporation · 1977