Brass alloy for writing instrument tips
US-12522014-B2 · Jan 13, 2026 · US
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Balls
Balls · 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 | B43K1/082 |
| Official title | {Balls} |
| Display label | Balls |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Writing instrument
US-2025282170-A1 · Sep 11, 2025 · US
Ceramic writing ball
US-12330444-B2 · Jun 17, 2025 · US
Writing instrument
US-12311694-B2 · May 27, 2025 · US
Ceramic writing ball
US-2024336083-A1 · Oct 10, 2024 · US
Passive variable friction pen
US-12030339-B2 · Jul 9, 2024 · US
Brass alloy for writing instrument tips
US-2023373235-A1 · Nov 23, 2023 · US
Passive variable friction pen
US-2023234392-A1 · Jul 27, 2023 · US
Writing instrument
US-2022371356-A1 · Nov 24, 2022 · US
Water-based ballpoint pen
US-2022194118-A1 · Jun 23, 2022 · US
Ballpoint pen
US-10576774-B2 · Mar 3, 2020 · US
Ballpoint pen
US-2018319200-A1 · Nov 8, 2018 · US
Roller-ball paint marker
US-10040312-B2 · Aug 7, 2018 · US
Roller-ball paint marker
US-2017136804-A1 · May 18, 2017 · US
Ball pen
US-9545813-B2 · Jan 17, 2017 · US
Ballpoint pen
US-9533528-B2 · Jan 3, 2017 · US
Fabrication of diamond shells
US-9481930-B2 · Nov 1, 2016 · US
Refill for a ball-point pen and use thereof
US-2016040269-A1 · Feb 11, 2016 · US
Ball pen
US-2015165812-A1 · Jun 18, 2015 · US
Ballpoint pen
US-2015078803-A1 · Mar 19, 2015 · US