Smart water filter system
US-2016340207-A1 · Nov 24, 2016 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C02F1/68 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 600 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 41 |
| 2016 | 47 |
| 2017 | 53 |
| 2018 | 31 |
| 2019 | 55 |
| 2020 | 61 |
| 2021 | 81 |
| 2022 | 57 |
| 2023 | 63 |
| 2024 | 49 |
| 2025 | 47 |
| 2026 | 15 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of improving solubility of zinc in zinc-containing still drinking water and shelf-stable zinc-containing still drinking water
US-9497986-B2 · Nov 22, 2016 · US
Method and apparatus for removing chloride from samples containing volatile organic carbon
US-9499421-B2 · Nov 22, 2016 · US
Methods and systems for selenocyanate removal from contaminated aqueous media
US-2016311711-A1 · Oct 27, 2016 · US
Monitoring hydraulic fracturing
US-9477238-B2 · Oct 25, 2016 · US
Production process for a zinc enriched drinking water, composition and packaged water
US-9458039-B2 · Oct 4, 2016 · US
Composition, system, and method for treating water systems
US-9452457-B2 · Sep 27, 2016 · US
Sulfide scavengers, methods for making and methods for using
US-9440909-B2 · Sep 13, 2016 · US
Device for collecting and separating aqueous and/or oily liquids and cryogenic liquid
US-9415327-B2 · Aug 16, 2016 · US
Compositions and Methods for Scale Inhibition
US-2016221849-A1 · Aug 4, 2016 · US
Communication-link-attached persistent memory system
US-9405680-B2 · Aug 2, 2016 · US
Stable percarboxylic acid compositions and uses thereof
US-2016200595-A1 · Jul 14, 2016 · US
Method of dissolving and/or inhibiting the deposition of scale on a surface of a system
US-9382139-B2 · Jul 5, 2016 · US
Multiple batch system for the preparation of a solution of calcium hydrogen carbonate suitable for the remineralization of desalinated water and of naturally soft water
US-2016167000-A1 · Jun 16, 2016 · US
Method and device for preventing corrosion in hot water systems
US-9352980-B2 · May 31, 2016 · US
Corrosion control methods
US-9290849-B2 · Mar 22, 2016 · US
Method for enhancing degradation of chlorinated organics
US-2016068418-A1 · Mar 10, 2016 · US
Antiscalant composition and its use
US-2016068416-A1 · Mar 10, 2016 · US
Scale-inhibiting polymers and methods for preventing scale formation
US-2016060147-A1 · Mar 3, 2016 · US
Non-phosphorous containing corrosion inhibitors for aqueous systems
US-2015376799-A1 · Dec 31, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/68?
- CPC C02F1/68 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F1/68 (Chemistry & Metallurgy)?
- Our database includes 600 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/68 growing?
- Publication counts under this code: 49 in 2024 vs 47 in 2025 (latest complete years).