Water softener
US-2026028252-A1 · Jan 29, 2026 · US
of water softeners
of water softeners · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J49/75 |
| Official title | of water softeners |
| Display label | of water softeners |
| Total patents | 57 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 6 |
| 2017 | 13 |
| 2018 | 10 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water softener system and method of operating the same
US-12515214-B2 · Jan 6, 2026 · US
Water softener and control method for water softener
US-2026001781-A1 · Jan 1, 2026 · US
Regeneration cycle for a water softener
US-2025326664-A1 · Oct 23, 2025 · US
Water-softening device
US-2025230068-A1 · Jul 17, 2025 · US
Water softening device and washing machine
US-2025146204-A1 · May 8, 2025 · US
Water softening device
US-2025083138-A1 · Mar 13, 2025 · US
Method for regenerating resin of a water softening plant
US-2025073697-A1 · Mar 6, 2025 · US
Water softening device
US-2024342701-A1 · Oct 17, 2024 · US
Method for prompting salt content in salt container of water softening device
US-2024270606-A1 · Aug 15, 2024 · US
Adaptive descaling using location data
US-2024149263-A1 · May 9, 2024 · US
Water softening device, recycling method for water softening device, and method for cleaning water softening device
US-2024002263-A1 · Jan 4, 2024 · US
Ion-exchange resin regeneration system
US-11780752-B2 · Oct 10, 2023 · US
Water softening device and regeneration method thereof
US-2023295015-A1 · Sep 21, 2023 · US
Washing appliance with water softener
US-2023263362-A1 · Aug 24, 2023 · US
Water softener system and method of operating the same
US-2022410139-A1 · Dec 29, 2022 · US
Water softener
US-2022274100-A1 · Sep 1, 2022 · US
In-line water hardness sensor and water softener control system
US-2022194819-A1 · Jun 23, 2022 · US
Ion-exchange resin regeneration system
US-2021238060-A1 · Aug 5, 2021 · US
Water softener
US-10745297-B2 · Aug 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J49/75?
- CPC B01J49/75 is the Cooperative Patent Classification code for “of water softeners.”
- How many patents are filed under CPC B01J49/75 (of water softeners)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC B01J49/75 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).