Method for operating a printing device and printing device
US-2019240988-A1 · Aug 8, 2019 · US
for preventing or detecting contamination of compounds
for preventing or detecting contamination of compounds · 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 | B41J2/20 |
| Official title | for preventing or detecting contamination of compounds |
| Display label | for preventing or detecting contamination of compounds |
| Total patents | 149 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 17 |
| 2017 | 7 |
| 2018 | 16 |
| 2019 | 9 |
| 2020 | 15 |
| 2021 | 9 |
| 2022 | 13 |
| 2023 | 8 |
| 2024 | 10 |
| 2025 | 18 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid ejection device and particle detector
US-2019202206-A1 · Jul 4, 2019 · US
Liquid consuming apparatus including liquid tank with rotatable cover
US-10328708-B2 · Jun 25, 2019 · US
Inkjet recording apparatus with cover and method therefor including inquiry and notification features
US-10328705-B2 · Jun 25, 2019 · US
Solvent or ink container plug
US-10189268-B2 · Jan 29, 2019 · US
Printing result inspection apparatus and method
US-2019003985-A1 · Jan 3, 2019 · US
Liquid ejecting apparatus
US-10160214-B2 · Dec 25, 2018 · US
Device for measuring overflow from a gutter of a print head of an ink jet printer
US-2018361753-A1 · Dec 20, 2018 · US
Recording apparatus
US-D836113-S · Dec 18, 2018 · US
Liquid ejection head manufacture method and liquid ejection head
US-10150299-B2 · Dec 11, 2018 · US
System and method for attenuating oxygen inhibition of ultraviolet ink curing on an image on a three-dimensional (3D) object during printing of the object
US-10093108-B1 · Oct 9, 2018 · US
Ink circulation apparatus
US-2018272735-A1 · Sep 27, 2018 · US
Inkjet recording apparatus
US-2018147856-A1 · May 31, 2018 · US
Maintenance aid device of a hydraulic circuit
US-2018134044-A1 · May 17, 2018 · US
Liquid ejecting apparatus
US-2018126738-A1 · May 10, 2018 · US
Method for the indirect application of printing liquid onto a printing material
US-9937734-B2 · Apr 10, 2018 · US
White inkjet ink printing
US-9920213-B2 · Mar 20, 2018 · US
Liquid consuming apparatus including liquid tank with rotatable cover
US-2018072065-A1 · Mar 15, 2018 · US
Ink jet printer
US-2018056685-A1 · Mar 1, 2018 · US
Maintenance aid device of a hydraulic circuit
US-9902167-B2 · Feb 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B41J2/20?
- CPC B41J2/20 is the Cooperative Patent Classification code for “for preventing or detecting contamination of compounds.”
- How many patents are filed under CPC B41J2/20 (for preventing or detecting contamination of compounds)?
- Our database includes 149 publications tagged with this CPC code.
- Is patent activity under CPC B41J2/20 growing?
- Publication counts under this code: 10 in 2024 vs 18 in 2025 (latest complete years).