Medicament Preparation and Treatment Devices, Methods, and Systems
US-2024277909-A1 · Aug 22, 2024 · US
Filter life
Filter life · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C02F2209/445 |
| Official title | Filter life |
| Display label | Filter life |
| Total patents | 187 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 12 |
| 2017 | 8 |
| 2018 | 11 |
| 2019 | 23 |
| 2020 | 26 |
| 2021 | 27 |
| 2022 | 21 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 24 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Appliance water filter system having memory and authentication functionality
US-2019381431-A1 · Dec 19, 2019 · US
Method of treating water with an ion exchange bed in a water treatment system
US-10501343-B1 · Dec 10, 2019 · US
Medicament preparation and treatment devices, methods, and systems
US-10478544-B2 · Nov 19, 2019 · US
Water purifier and control method thereof
US-2019346201-A1 · Nov 14, 2019 · US
Filter Cartridge Placement In Filter As You Pour System
US-2019322542-A1 · Oct 24, 2019 · US
Smart water filter system
US-10450203-B2 · Oct 22, 2019 · US
Water filter purge indication
US-10434443-B2 · Oct 8, 2019 · US
Water purifier
US-2019299163-A1 · Oct 3, 2019 · US
Water filter purge indication
US-2019291031-A1 · Sep 26, 2019 · US
Appliance water filter system having memory and authentication functionality
US-10406461-B2 · Sep 10, 2019 · US
Water purifier and control method thereof
US-10408533-B2 · Sep 10, 2019 · US
Water purification system
US-10370265-B2 · Aug 6, 2019 · US
Water filtration system
US-2019193007-A1 · Jun 27, 2019 · US
Method and apparatus to monitor and control a water system
US-2019144301-A1 · May 16, 2019 · US
Method and apparatus to monitor and control a water system
US-10273165-B1 · Apr 30, 2019 · US
Method and apparatus to monitor and control a water system
US-2019112201-A1 · Apr 18, 2019 · US
Wire electric discharge machine having estimation function for filter replacement timing
US-10179368-B2 · Jan 15, 2019 · US
System for detecting a liquid and a water filter assembly
US-10173905-B2 · Jan 8, 2019 · US
System for detecting a liquid and a water filter assembly
US-10173904-B2 · Jan 8, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2209/445?
- CPC C02F2209/445 is the Cooperative Patent Classification code for “Filter life.”
- How many patents are filed under CPC C02F2209/445 (Filter life)?
- Our database includes 187 publications tagged with this CPC code.
- Is patent activity under CPC C02F2209/445 growing?
- Publication counts under this code: 11 in 2024 vs 24 in 2025 (latest complete years).