B03D 1/01
Containing nitrogen
Official title: containing nitrogen
B03D1/01 (Containing nitrogen) appears on 349 US grants and 198 published applications in this corpus.
Search patents in B03D- Granted patents
- 349
- Published applications
- 198
- Assignees
- 182
- Inventors
- 724
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 11 | 0 |
| 1980 | 11 | 0 |
| 1981 | 18 | 0 |
| 1982 | 13 | 0 |
| 1983 | 10 | 0 |
| 1984 | 14 | 0 |
| 1985 | 7 | 0 |
| 1986 | 9 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 4 |
| 2006 | 4 | 6 |
| 2007 | 3 | 6 |
| 2008 | 1 | 4 |
| 2009 | 2 | 9 |
| 2010 | 1 | 11 |
| 2011 | 4 | 6 |
| 2012 | 8 | 3 |
| 2013 | 9 | 11 |
| 2014 | 9 | 13 |
| 2015 | 7 | 12 |
| 2016 | 11 | 8 |
| 2017 | 10 | 8 |
| 2018 | 6 | 8 |
| 2019 | 8 | 12 |
| 2020 | 10 | 10 |
| 2021 | 6 | 15 |
| 2022 | 1 | 7 |
| 2023 | 13 | 9 |
| 2024 | 8 | 12 |
| 2025 | 9 | 7 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mining collectors6 Oct 2026US 12,752,286 B2
- Mining collectors15 Sep 2026US 12,734,529 B1
- Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity8 Sep 2026US 12,729,140 B2Ecolab USA Inc.
- Compounds, methods, and systems for benefication of rare earth elements by flotation and gravity concentration10 Mar 2026US 12,569,861 B2Colorado School of Mines
- Collector composition25 Nov 2025US 12,478,982 B2BASF SE
- Sulfur compositions for froth flotation of ores30 Jul 2026US 2026/0216736 A1Arkema Inc.
- Method for flotation of argillaceous zinc oxide ore with full-size fractions16 Jul 2026US 2026/0199907 A1
- Flotation method for recovery of copper oxide ore with full-size fractions16 Jul 2026US 2026/0199908 A1Kunming University of Science and Technology
- Flotation reagent and application thereof, and method for synchronously recovering fluorite and rare earth from fluorite-type rare earth ores9 Jul 2026US 2026/0192308 A1IMUMR, Chinese Academy of Geological Sciences
- Flotation recovery methods for full particle size copper ore25 Jun 2026US 2026/0175234 A1Central South University
Most cited
By later US patents
- Foaming surfactant compositions383US 4,565,647 AThe Procter & Gamble Company · 1986
- Promoters for froth flotation of coal56US 4,589,980 ASherex Chemical Company, Inc. · 1986
- Collector compositions for the froth flotation of mineral values41US 4,684,459 AThe Dow Chemical Company · 1987
- Process for the froth flotation of calcium phosphate-containing minerals and flotation agents therefor40US 4,358,368 ABerol Kemi AB · 1982
- Promotors for froth floatation of coal37US 4,678,562 ASherex Chemical Company, Inc. · 1987