C02F 2209/34
N2o
C02F2209/34 (N2o) appears on 9 US grants and 13 published applications in this corpus.
Search patents in C02F- Granted patents
- 9
- Published applications
- 13
- Assignees
- 9
- Inventors
- 38
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 3 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 3 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for controlling nitrous oxide production in wastewater treatment facilities28 Jul 2026US 12,692,181 B2Hach Company
- Method of controlling a wastewater treatment plant27 Jan 2026US 12,534,391 B2Veolia Water Solutions & Technologies Support
- System for neutralizing the pH of exhaust condensate10 Dec 2019US 10,501,337 B2Tenneco Automotive Operating Company Inc.
- Sequencing batch facility and method for reducing the nitrogen content in waste water16 Apr 2019US 10,259,732 B2Suez International
- Control system for nitrogen and phosphorus removal19 Feb 2019US 10,207,941 B2Environmental Operating Solutions, Inc.
- Nitrogen removal system and process3 Oct 2024US 2024/0327262 A1Black & Veatch Holding Company
- Air flow control in a membrane aerated biofilm reactor2 May 2024US 2024/0140841 A1
- Methods for enhanced biological phosphorus removal18 Jan 2024US 2024/0018027 A1Hias How2O AS
- Systems and methods for controlling nitrous oxide production in wastewater treatment facilities29 Jun 2023US 2023/0202889 A1Hach Company
- Method of controlling a wastewater treatment plant1 Apr 2021US 2021/0094851 A1Veolia Water Solutions & Technologies Support
Most cited
By later US patents
- Microbial production of nitrous oxide coupled with chemical reaction of gaseous nitrous oxide including phosphorus recovery and nitrite reduction to nitrous oxide2US 8,932,849 B2The Board of Trustees of the Leland Stanford Junior University · 2015
- System for neutralizing the pH of exhaust condensate1US 10,501,337 B2Tenneco Automotive Operating Company Inc. · 2019
- Microbial production of nitrous oxide coupled with chemical reaction of gaseous nitrous oxide1US 8,932,848 B2The Board of Trustees of the Leland Stanford Junior University · 2015