Efficient ink erasure system
US-12403719-B2 · Sep 2, 2025 · US
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Pens with writing-points other than nibs or balls (brushes with reservoir for supplying substances A46B11/00)
Pens with writing-points other than nibs or balls (brushes with reservoir for supplying substances A46B11/00) · 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 | B43K8/00 |
| Official title | Pens with writing-points other than nibs or balls (brushes with reservoir for supplying substances A46B11/00) |
| Display label | Pens with writing-points other than nibs or balls (brushes with reservoir for supplying substances A46B11/00) |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 3 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermoplastic resin composition and use thereof
US-2024376298-A1 · Nov 14, 2024 · US
Oil-based ink composition for writing utensils, writing utensil using same, and airbrush unit using same
US-12054622-B2 · Aug 6, 2024 · US
Efficient ink erasure system
US-2024227430-A1 · Jul 11, 2024 · US
Drawing substrate
US-2023382153-A1 · Nov 30, 2023 · US
Printing device and composition comprising magnetic-color-changeable microcapsules
US-11633951-B2 · Apr 25, 2023 · US
Color changing aqueous ink
US-2022259450-A1 · Aug 18, 2022 · US
Oil-based ink composition for writing utensils, writing utensil using same, and airbrush unit using same
US-2022017760-A1 · Jan 20, 2022 · US
Printing device and composition comprising magnetic-color-changeable microcapsules
US-2021146684-A1 · May 20, 2021 · US
Aqueous ink composition for writing instruments
US-10501649-B2 · Dec 10, 2019 · US
Applicator pen
US-10350937-B2 · Jul 16, 2019 · US
Writing device and touch system
US-2019121456-A1 · Apr 25, 2019 · US
X-ray ink pen
US-9980784-B2 · May 29, 2018 · US
Writing implement
US-9889701-B2 · Feb 13, 2018 · US
Aqueous ink composition for writing instruments
US-2018016457-A1 · Jan 18, 2018 · US
X-ray ink pen
US-2017215984-A1 · Aug 3, 2017 · US
Applicator pen
US-2017217244-A1 · Aug 3, 2017 · US
Writing implement
US-2017028769-A1 · Feb 2, 2017 · US
Applying material extruding container
US-9474348-B2 · Oct 25, 2016 · US
Applying material extruding container
US-2015030372-A1 · Jan 29, 2015 · US