C09K 2109/00
Ph regulation
Official title: pH regulation
C09K2109/00 (Ph regulation) appears on 15 US grants and 13 published applications in this corpus.
Search patents in C09K- Granted patents
- 15
- Published applications
- 13
- Assignees
- 14
- Inventors
- 45
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 2 | 6 |
| 2024 | 2 | 2 |
| 2025 | 4 | 0 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Drilling fluid with self-adjusted alkalinity24 Mar 2026US 12,584,058 B2Baker Hughes Oilfied Operations LLC
- Method for engineered geothermal system treatment using brines16 Sep 2025US 12,415,946 B2Firehole Geothermal Solutions, LLC
- Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive19 Aug 2025US 12,391,868 B2Beijing Huamei, Inc.
- Method for extracting and separating salt alkali from saline alkali soil and soil improvement5 Aug 2025US 12,377,452 B2Tarim University
- Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive4 Mar 2025US 12,241,022 B2Beijing Huamei, Inc.
- Method for engineered geothermal system treatment using brines24 Oct 2024US 2024/0352305 A1Firehole Geothermal Solutions, LLC
- Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive9 May 2024US 2024/0150642 A1Beijing Huamei, Inc.
- Drilling fluid with self-adjusted alkalinity28 Dec 2023US 2023/0416586 A1Baker Hughes Oilfield Operations LLC
- Method for extracting and separating salt alkali from saline alkali soil and soil improvement28 Sep 2023US 2023/0302511 A1Tarim University
- Calcium carbonate agricultural products and methods of using the same27 Jul 2023US 2023/0235227 A1
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.