C02F 1/727
Using pure oxygen or oxygen rich gas
Official title: {using pure oxygen or oxygen rich gas}
C02F1/727 (Using pure oxygen or oxygen rich gas) appears on 314 US grants and 508 published applications in this corpus.
Search patents in C02F- Granted patents
- 314
- Published applications
- 508
- Assignees
- 286
- Inventors
- 881
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 8 | 4 |
| 2003 | 4 | 21 |
| 2004 | 14 | 22 |
| 2005 | 12 | 17 |
| 2006 | 9 | 65 |
| 2007 | 13 | 15 |
| 2008 | 7 | 22 |
| 2009 | 12 | 12 |
| 2010 | 17 | 15 |
| 2011 | 11 | 21 |
| 2012 | 6 | 15 |
| 2013 | 12 | 20 |
| 2014 | 8 | 18 |
| 2015 | 14 | 11 |
| 2016 | 12 | 24 |
| 2017 | 17 | 21 |
| 2018 | 7 | 15 |
| 2019 | 16 | 16 |
| 2020 | 17 | 24 |
| 2021 | 18 | 25 |
| 2022 | 8 | 24 |
| 2023 | 15 | 20 |
| 2024 | 8 | 24 |
| 2025 | 15 | 29 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for oxygen-doping of poultry drinking water with calcium carbonate control9 Jun 2026US 12,648,544 B2Air Liquide France Industrie
- Method for separating iron element in brine and application thereof26 May 2026US 12,637,360 B2BYD Company Limited
- Flow path member for generating nano-bubbles, and integrated flow path unit and nano-bubble generator using same28 Apr 2026US 12,611,636 B2Fawoo Nanotech Co., Ltd.
- Method and apparatus for wastewater treatment using ultrafine bubbles7 Apr 2026US 12,595,198 B2Ypf Tecnologia S.A.
- Method and systems for oxygenation of water bodies24 Mar 2026US 12,583,774 B2Gantzer Water, LLC
- Removal and destruction of perfluoroalkyl and polyfluoroalkyl substances from contaminated water20 Aug 2026US 2026/0242247 A1Evoqua Water Technologies LLC
- Water desalination systems6 Aug 2026US 2026/0225934 A1Badwater Alchemy Technologies Inc.
- Arrangement and method for treatment of water in a vessel for culture of marine organisms30 Jul 2026US 2026/0217578 A1Searas AS
- Gas infusion module systems18 Jun 2026US 2026/0167536 A1Prosper Technologies, LLC
- Internal water reuse in direct lithium extraction systems7 May 2026US 2026/0125775 A1Lithos Industries, Inc., dba Element3
Most cited
By later US patents
- Diffuser/emulsifier124US 6,386,751 B1Diffusion Dynamics, Inc. · 2002
- Disinfection and purification of fluids using focused laser radiation102US 4,265,747 ASterling Drug Inc. · 1981
- Microbubbles of oxygen83US 6,689,262 B2Aqua Innovation, Inc. · 2004
- Waste treatment process78US 6,783,679 B1PMC Technologies, Inc. · 2004
- Treatment of liquid69US 4,163,712 ABOC Limited · 1979