Writing instrument part, method for manufacturing writing instrument part, and writing instrument
US-12545047-B2 · Feb 10, 2026 · US
Pen barrels
Pen barrels · 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 | B43K5/005 |
| Official title | {Pen barrels} |
| Display label | Pen barrels |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Writing instrument part, method for manufacturing writing instrument part, and writing instrument
US-2025313033-A1 · Oct 9, 2025 · US
Writing instrument
US-2025162343-A1 · May 22, 2025 · US
Self-disinfecting writing instrument
US-2024228795-A1 · Jul 11, 2024 · US
Fountain pen with quick-filling coupling
US-12030338-B2 · Jul 9, 2024 · US
Writing instrument and method thereof
US-11951762-B2 · Apr 9, 2024 · US
Fountain pen with quick-filling coupling
US-2023331027-A1 · Oct 19, 2023 · US
Writing instrument and method thereof
US-2023302843-A1 · Sep 28, 2023 · US
Applicator
US-11766110-B2 · Sep 26, 2023 · US
Convertible writing assemblies and components thereof
US-11731450-B2 · Aug 22, 2023 · US
Ink reservoir unit for writing instruments and writing instruments
US-11679618-B2 · Jun 20, 2023 · US
Cosmetic applicator
US-11589665-B2 · Feb 28, 2023 · US
Convertible writing assemblies and components thereof
US-2022339961-A1 · Oct 27, 2022 · US
Retractable nosecone writing instrument
US-11407248-B2 · Aug 9, 2022 · US
Writing felt pen
US-11364736-B2 · Jun 21, 2022 · US
Applicator
US-2022183441-A1 · Jun 16, 2022 · US
Ink reservoir unit for writing instruments and writing instruments
US-2022176728-A1 · Jun 9, 2022 · US
Ultra-high flow styrene acrylonitrile copolymer compositions
US-11352488-B2 · Jun 7, 2022 · US
Cosmetic applicator
US-2022061496-A1 · Mar 3, 2022 · US
Retractable Nosecone Writing Instrument
US-2021331514-A1 · Oct 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B43K5/005?
- CPC B43K5/005 is the Cooperative Patent Classification code for “Pen barrels.”
- How many patents are filed under CPC B43K5/005 (Pen barrels)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC B43K5/005 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).