Biochar encased in a biodegradable material
US-10870608-B1 · Dec 22, 2020 · US
containing inorganic compounds only
containing inorganic compounds only · 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 | C09K17/02 |
| Official title | containing inorganic compounds only |
| Display label | containing inorganic compounds only |
| Total patents | 95 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 6 |
| 2017 | 14 |
| 2018 | 17 |
| 2019 | 15 |
| 2020 | 7 |
| 2021 | 11 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biochar Coated Seeds
US-2020255353-A1 · Aug 13, 2020 · US
Biochar Suspended Solution
US-2020148608-A1 · May 14, 2020 · US
Methods for application of biochar
US-10640429-B2 · May 5, 2020 · US
Biochars and biochar treatment processes
US-10556838-B2 · Feb 11, 2020 · US
Biochar coated seeds
US-10550044-B2 · Feb 4, 2020 · US
Method for application of biochar in turf grass and landscaping environments
US-2020010377-A1 · Jan 9, 2020 · US
Method for application of biochar in turf grass and landscaping environments
US-2019375691-A1 · Dec 12, 2019 · US
Biochars for use with animals
US-2019375690-A1 · Dec 12, 2019 · US
Process To Convert Reduced Sulfur Species And Water Into Hydrogen And Sulfuric Acid
US-2019376191-A1 · Dec 12, 2019 · US
Enhanced biochar
US-2019367425-A1 · Dec 5, 2019 · US
Biochar suspended solution
US-10472298-B2 · Nov 12, 2019 · US
Composite material for catalytic treatment of contaminated soil and water and catalytic treatment method thereof
US-10435317-B2 · Oct 8, 2019 · US
Method for application of biochar in turf grass and landscaping environments
US-10392313-B2 · Aug 27, 2019 · US
Methods for application of biochar
US-2019210934-A1 · Jul 11, 2019 · US
Biochar as a microbial carrier
US-2019210935-A1 · Jul 11, 2019 · US
Enhanced biochar
US-10301228-B2 · May 28, 2019 · US
Subgrade irrigation for site preparation having clayey expansive soil
US-10294622-B2 · May 21, 2019 · US
Methods for application of biochar
US-10233129-B2 · Mar 19, 2019 · US
Biochar suspended solution
US-2019071371-A1 · Mar 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K17/02?
- CPC C09K17/02 is the Cooperative Patent Classification code for “containing inorganic compounds only.”
- How many patents are filed under CPC C09K17/02 (containing inorganic compounds only)?
- Our database includes 95 publications tagged with this CPC code.
- Is patent activity under CPC C09K17/02 growing?
- Publication counts under this code: 5 in 2024 vs 7 in 2025 (latest complete years).