Writing instrument
US-2025162343-A1 · May 22, 2025 · US
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Writing implement receptacles functioning as, or combined with, writing implements (other writing implement receptacles A45C11/34, A45C11/36)
Writing implement receptacles functioning as, or combined with, writing implements (other writing implement receptacles A45C11/34, A45C11/36) · 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 | B43K31/00 |
| Official title | Writing implement receptacles functioning as, or combined with, writing implements (other writing implement receptacles A45C11/34, A45C11/36) |
| Display label | Writing implement receptacles functioning as, or combined with, writing implements (other writing implement receptacles A45C11/34, A45C11/36) |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Porous color linker
US-12017472-B2 · Jun 25, 2024 · US
Convertible writing assemblies and components thereof
US-11731450-B2 · Aug 22, 2023 · US
Convertible writing assemblies and components thereof
US-2022339961-A1 · Oct 27, 2022 · US
Porous color linker
US-2022234379-A1 · Jul 28, 2022 · US
Crayon container
US-10993516-B2 · May 4, 2021 · US
Stylus Holder
US-2020023670-A1 · Jan 23, 2020 · US
Touch pen, touch device, and system for calligraphy practice
US-2019339796-A1 · Nov 7, 2019 · US
Crayon Container
US-2019246759-A1 · Aug 15, 2019 · US
Electronic transaction card with stylus
US-9242503-B2 · Jan 26, 2016 · US