Liquid ejection apparatus and determination method capable of determining whether or not liquid filling of pressure chamber has been completed
US-12447741-B2 · Oct 21, 2025 · US
using vibration or ultra-sons for ink level indication
using vibration or ultra-sons for ink level indication · 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 | B41J2002/17583 |
| Official title | {using vibration or ultra-sons for ink level indication} |
| Display label | using vibration or ultra-sons for ink level indication |
| Total patents | 25 |
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 | 1 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid ejection apparatus and determination method capable of determining whether or not liquid filling of pressure chamber has been completed
US-2024109308-A1 · Apr 4, 2024 · US
Inkjet Ink System for Handling High Solid Particles Loaded Inks
US-2023173818-A1 · Jun 8, 2023 · US
Apparatus and method for inspecting droplet
US-11577506-B2 · Feb 14, 2023 · US
Printing agent containers
US-11298949-B2 · Apr 12, 2022 · US
Apparatus and method for inspecting droplet
US-2022072848-A1 · Mar 10, 2022 · US
Replaceable print apparatus components comprising memory
US-11207892-B2 · Dec 28, 2021 · US
Printer
US-11130347-B2 · Sep 28, 2021 · US
Fluid level sensors
US-2021190574-A1 · Jun 24, 2021 · US
Container for fluid
US-2021129548-A1 · May 6, 2021 · US
Orientation sensing
US-2021095958-A1 · Apr 1, 2021 · US
Printer
US-10889125-B2 · Jan 12, 2021 · US
Printing agent containers
US-2020307233-A1 · Oct 1, 2020 · US
Printer
US-2020254775-A1 · Aug 13, 2020 · US
Printer
US-2020254770-A1 · Aug 13, 2020 · US
Replaceable print apparatus components comprising memory
US-2020238720-A1 · Jul 30, 2020 · US
Liquid surface sensor and liquid surface detection method
US-10656003-B2 · May 19, 2020 · US
Liquid detecting apparatus and liquid container
US-10386222-B2 · Aug 20, 2019 · US
Liquid surface sensor and liquid surface detection method
US-2019162577-A1 · May 30, 2019 · US
Liquid detecting apparatus and liquid container
US-2018143063-A1 · May 24, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B41J2002/17583?
- CPC B41J2002/17583 is the Cooperative Patent Classification code for “using vibration or ultra-sons for ink level indication.”
- How many patents are filed under CPC B41J2002/17583 (using vibration or ultra-sons for ink level indication)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC B41J2002/17583 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).