Electrohydrodynamic printer with self-cleaning extractor
US-12459278-B2 · Nov 4, 2025 · US
Operations & Transport
Operations & Transport · 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 | B41J2002/031 |
| Official title | — |
| Display label | Operations & Transport (mapped technology topic) |
| Total patents | 28 |
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 | 4 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 5 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-frequency electrohydrodynamic printing
US-2024416650-A1 · Dec 19, 2024 · US
Organic vapor jet micro-print head with multiple gas distribution orifice plates
US-12127467-B2 · Oct 22, 2024 · US
Electrohydrodynamic printer with self-cleaning extractor
US-2023256758-A1 · Aug 17, 2023 · US
Liquid ejecting apparatus and maintenance method of liquid ejecting apparatus
US-11623441-B2 · Apr 11, 2023 · US
Organic vapor jet micro-print head with multiple gas distribution orifice plates
US-2021343942-A1 · Nov 4, 2021 · US
Liquid ejecting apparatus
US-11148433-B2 · Oct 19, 2021 · US
Organic vapor jet micro-print head with multiple gas distribution orifice plates
US-11088325-B2 · Aug 10, 2021 · US
Print head or ink jet printer with reduced solvent consumption
US-11084288-B2 · Aug 10, 2021 · US
Liquid ejecting apparatus and maintenance method of liquid ejecting apparatus
US-2021107277-A1 · Apr 15, 2021 · US
Inkjet printing apparatus and printing method using the same
US-10797240-B2 · Oct 6, 2020 · US
Liquid ejecting apparatus
US-2020254778-A1 · Aug 13, 2020 · US
Organic vapor jet micro-print head with multiple gas distribution orifice plates
US-2020235296-A1 · Jul 23, 2020 · US
Print head or ink jet printer with reduced solvent consumption
US-2019248143-A1 · Aug 15, 2019 · US
Valve
US-10357978-B2 · Jul 23, 2019 · US
Print head or ink jet printer with reduced solvent consumption
US-10336077-B2 · Jul 2, 2019 · US
Inkjet printing apparatus and printing method using the same
US-2019173010-A1 · Jun 6, 2019 · US
Valve
US-2018111384-A1 · Apr 26, 2018 · US
Valve
US-9878556-B2 · Jan 30, 2018 · US
Apparatus and Method for Control of Print Gap
US-2017246892-A1 · Aug 31, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B41J2002/031?
- CPC B41J2002/031 is the Cooperative Patent Classification code for “Operations & Transport.”
- How many patents are filed under CPC B41J2002/031 (Operations & Transport)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC B41J2002/031 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).