Fountain pen with quick-filling coupling
US-12030338-B2 · Jul 9, 2024 · US
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with reserve ink chambers
with reserve ink chambers · 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 | B43K5/10 |
| Official title | with reserve ink chambers |
| Display label | with reserve ink chambers |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fountain pen with quick-filling coupling
US-2023331027-A1 · Oct 19, 2023 · US
Liquid storage and release device and pen
US-11548313-B2 · Jan 10, 2023 · US
Liquid Storage and Release Device and Pen
US-2021122183-A1 · Apr 29, 2021 · US
Collector-type applicator implement
US-9119457-B2 · Sep 1, 2015 · US