Drawing material container cartridge and drawing material container set
US-12583248-B2 · Mar 24, 2026 · US
Ink reservoirs; Ink cartridges (B43K7/01 takes precedence)
Ink reservoirs; Ink cartridges (B43K7/01 takes precedence) · 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 | B43K7/02 |
| Official title | Ink reservoirs; Ink cartridges (B43K7/01 takes precedence) |
| Display label | Ink reservoirs; Ink cartridges (B43K7/01 takes precedence) |
| Total patents | 55 |
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 | 5 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 13 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Plasmonic inks with vivid colors
US-2026055285-A1 · Feb 26, 2026 · US
Writing instrument part, method for manufacturing writing instrument part, and writing instrument
US-12545047-B2 · Feb 10, 2026 · US
Liquid storage member for coating tools
US-2025353319-A1 · Nov 20, 2025 · US
Ink composition for water-based ballpoint pen
US-12441899-B2 · Oct 14, 2025 · US
Writing instrument part, method for manufacturing writing instrument part, and writing instrument
US-2025313033-A1 · Oct 9, 2025 · US
Ink storage member for writing implements
US-2025313034-A1 · Oct 9, 2025 · US
Writing instrument
US-12429961-B2 · Sep 30, 2025 · US
Output device for uniformly mixed liquid and method for making and using the same
US-12377677-B2 · Aug 5, 2025 · US
Writing instrument
US-2025162343-A1 · May 22, 2025 · US
Liquid storage member for coating tools
US-12275215-B2 · Apr 15, 2025 · US
Ballpoint pen refill and ballpoint pen
US-12275271-B2 · Apr 15, 2025 · US
Writing implement refill and method of engraving writing implement refill
US-2025115072-A1 · Apr 10, 2025 · US
Drawing material container cartridge and drawing material container set
US-2025100317-A1 · Mar 27, 2025 · US
Variable color shade marker
US-12251959-B2 · Mar 18, 2025 · US
Opaque ink formulations and associated writing instruments
US-12209192-B2 · Jan 28, 2025 · US
Ballpoint pen refill and ballpoint pen
US-2024416674-A1 · Dec 19, 2024 · US
Variable color shade marker
US-2024300258-A1 · Sep 12, 2024 · US
Refillable free ink writing instrument, kit comprising such a writing instrument, and method thereof
US-12030337-B2 · Jul 9, 2024 · US
Liquid storage member for coating tools
US-2024042735-A1 · Feb 8, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B43K7/02?
- CPC B43K7/02 is the Cooperative Patent Classification code for “Ink reservoirs; Ink cartridges (B43K7/01 takes precedence).”
- How many patents are filed under CPC B43K7/02 (Ink reservoirs; Ink cartridges (B43K7/01 takes precedence))?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC B43K7/02 growing?
- Publication counts under this code: 4 in 2024 vs 13 in 2025 (latest complete years).