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US-2025366596-A1 · Dec 4, 2025 · US
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with paper sheaths
with paper sheaths · 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 | B43K19/145 |
| Official title | {with paper sheaths} |
| Display label | with paper sheaths |
| Total patents | 11 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Shaft body of pencil or cosmetic
US-12466210-B2 · Nov 11, 2025 · US
Shaft body of pencil or cosmetic
US-2024424825-A1 · Dec 26, 2024 · US
Sanitary sleeve for a handheld item
US-2023036149-A1 · Feb 2, 2023 · US
Color development writing compositions and writing instruments
US-2021380831-A1 · Dec 9, 2021 · US
Crayon carving device
US-10780509-B2 · Sep 22, 2020 · US
Crayon carving device
US-2018272443-A1 · Sep 27, 2018 · US
Crayon carving device
US-2017348778-A1 · Dec 7, 2017 · US
Crayon carving device
US-9827618-B2 · Nov 28, 2017 · US
Crayon carving device
US-2016207123-A1 · Jul 21, 2016 · US
Solid drawing material and solid drawing tool
US-9090784-B2 · Jul 28, 2015 · US