Filling system for a fountain pen
US-12384192-B2 · Aug 12, 2025 · US
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Pumps
Pumps · 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 | B43K5/189 |
| Official title | {Pumps} |
| Display label | Pumps |
| Total patents | 5 |
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 |
| 2021 | 1 |
| 2022 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filling system for a fountain pen
US-2024025202-A1 · Jan 25, 2024 · US
Pen with multiple colors
US-11529824-B2 · Dec 20, 2022 · US
Pen with multiple colors
US-2021387470-A1 · Dec 16, 2021 · US
Writing implement
US-9315066-B2 · Apr 19, 2016 · US