Variable color shade marker
US-12251959-B2 · Mar 18, 2025 · US
This page is not indexed by search engines while we improve data quality.
including compartment for soluble solid material
including compartment for soluble solid material · 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 | B43K8/10 |
| Official title | including compartment for soluble solid material |
| Display label | including compartment for soluble solid material |
| Total patents | 11 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System with salt-based color adjustment of substrate
US-12197059-B2 · Jan 14, 2025 · US
A replaceable cartridge for a writing instrument and method thereof
US-2025010654-A1 · Jan 9, 2025 · US
Variable color shade marker
US-2024300258-A1 · Sep 12, 2024 · US
Nib for writing felt pen
US-11926171-B2 · Mar 12, 2024 · US
System with salt-based color adjustment of substrate
US-2023314858-A1 · Oct 5, 2023 · US
Nib for writing felt pen
US-11697302-B2 · Jul 11, 2023 · US
Liquid storage and release device and pen
US-11548313-B2 · Jan 10, 2023 · US
Nib for writing felt pen
US-2022388330-A1 · Dec 8, 2022 · US
Nib for writing felt pen
US-2022339959-A1 · Oct 27, 2022 · US
Liquid Storage and Release Device and Pen
US-2021122183-A1 · Apr 29, 2021 · US