Light-shielding film for optical element and optical element having light-shielding film
US-11187832-B2 · Nov 30, 2021 · US
Carbon
Carbon · 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 | C04B14/022 |
| Official title | {Carbon} |
| Display label | Carbon |
| Total patents | 116 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 9 |
| 2019 | 12 |
| 2020 | 8 |
| 2021 | 10 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 17 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Block polymers for fluid loss control
US-11168026-B2 · Nov 9, 2021 · US
Masonry compositions comprising chemically treated carbon pigments
US-2021317038-A1 · Oct 14, 2021 · US
Process for hydrophobizing shaped insulation-material bodies based on silica at ambient pressure
US-2021292238-A1 · Sep 23, 2021 · US
Drilling fluids and methods of use
US-11124686-B2 · Sep 21, 2021 · US
Device comprising a cable or a cable accessory containing a fire-resistant composite layer
US-10961156-B2 · Mar 30, 2021 · US
Building materials and components and methods of making the same
US-2021061714-A1 · Mar 4, 2021 · US
Building products comprising graphene or graphene oxide in the bulk material and method for producing such building products
US-10836679-B2 · Nov 17, 2020 · US
Plasterboard
US-10822275-B2 · Nov 3, 2020 · US
Rapid-hardening cement composition
US-10800701-B2 · Oct 13, 2020 · US
Plasterboard
US-2020207664-A1 · Jul 2, 2020 · US
Systems and methods for electrical filter including a conductive concrete structure
US-2020176977-A1 · Jun 4, 2020 · US
Cold applied asphalt coating composition and associated methods of use
US-10626050-B2 · Apr 21, 2020 · US
Plasterboard
US-10611689-B2 · Apr 7, 2020 · US
Heat-dissipating ceramic foam containing carbonized cellulose particles and method for producing the same
US-10584071-B2 · Mar 10, 2020 · US
Method of recycling chitosan and graphene oxide compound
US-10414659-B2 · Sep 17, 2019 · US
Multi-functional cementitious materials with ultra-high damage tolerance and self-sensing ability
US-2019202738-A1 · Jul 4, 2019 · US
Device Comprising a Cable or a Cable Accessory Containing a Fire-Resistant Composite Layer
US-2019202739-A1 · Jul 4, 2019 · US
Agglomerate abrasive grain comprising incorporated hollow microspheres
US-10323165-B2 · Jun 18, 2019 · US
Multiple functional wellbore fluid additive
US-2019169484-A1 · Jun 6, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B14/022?
- CPC C04B14/022 is the Cooperative Patent Classification code for “Carbon.”
- How many patents are filed under CPC C04B14/022 (Carbon)?
- Our database includes 116 publications tagged with this CPC code.
- Is patent activity under CPC C04B14/022 growing?
- Publication counts under this code: 17 in 2024 vs 17 in 2025 (latest complete years).