Retractable element for a writing implement
US-12122181-B2 · Oct 22, 2024 · US
with rubbers
with rubbers · 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 | B43K29/02 |
| Official title | with rubbers |
| Display label | with rubbers |
| Total patents | 66 |
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 | 5 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 12 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Writing instruments
US-12070968-B2 · Aug 27, 2024 · US
Combination marker and eraser
US-12023954-B1 · Jul 2, 2024 · US
Friction body
US-2024066911-A1 · Feb 29, 2024 · US
Diester of bisphenol fluorene compounds and thermochromic pigment compositions comprising the same
US-11814528-B2 · Nov 14, 2023 · US
Eraser tool containing polyetheramine
US-11787226-B2 · Oct 17, 2023 · US
Writing instrument
US-11766886-B2 · Sep 26, 2023 · US
Writing instrument
US-11766887-B2 · Sep 26, 2023 · US
Convertible writing assemblies and components thereof
US-11731450-B2 · Aug 22, 2023 · US
Peelable ink composition for porous substrates
US-2023124990-A1 · Apr 20, 2023 · US
Writing instrument comprising a clip and a retractable eraser device
US-11571923-B2 · Feb 7, 2023 · US
Convertible writing assemblies and components thereof
US-2022339961-A1 · Oct 27, 2022 · US
Retractable element for a writing implement
US-2022227164-A1 · Jul 21, 2022 · US
Writing instrument
US-2022063323-A1 · Mar 3, 2022 · US
Writing instrument
US-2022063322-A1 · Mar 3, 2022 · US
Diester of bisphenol fluorene compounds and thermochromic pigment compositions comprising the same
US-2021363371-A1 · Nov 25, 2021 · US
Eraser tool containing polyetheramine
US-2021362536-A1 · Nov 25, 2021 · US
Pen tip and writing tool equipped with the pen tip
US-2021316566-A1 · Oct 14, 2021 · US
Writing instrument with erasing device
US-11090970-B2 · Aug 17, 2021 · US
Pencil lead
US-11072722-B2 · Jul 27, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B43K29/02?
- CPC B43K29/02 is the Cooperative Patent Classification code for “with rubbers.”
- How many patents are filed under CPC B43K29/02 (with rubbers)?
- Our database includes 66 publications tagged with this CPC code.
- Is patent activity under CPC B43K29/02 growing?
- Publication counts under this code: 8 in 2024 vs 2 in 2025 (latest complete years).