Ink storage member for writing implements
US-2025313034-A1 · Oct 9, 2025 · US
Ink cartridges, ink reservoirs · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B43K8/146 |
| Official title | {Ink cartridges, ink reservoirs} |
| Display label | Ink cartridges, ink reservoirs |
| Total patents | 12 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2019 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 4 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025313034-A1 · Oct 9, 2025 · US
US-12275215-B2 · Apr 15, 2025 · US
US-2025115072-A1 · Apr 10, 2025 · US
US-12251959-B2 · Mar 18, 2025 · US
US-2024300258-A1 · Sep 12, 2024 · US
US-2024042735-A1 · Feb 8, 2024 · US
US-11780258-B2 · Oct 10, 2023 · US
US-2022355612-A1 · Nov 10, 2022 · US
US-2019047316-A1 · Feb 14, 2019 · US
US-2019047317-A1 · Feb 14, 2019 · US
US-2017182815-A1 · Jun 29, 2017 · US
US-2017182834-A1 · Jun 29, 2017 · US