Particulate matter filling method and particulate matter filling device
US-12497201-B2 · Dec 16, 2025 · US
of the free-piston type
of the free-piston type · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01F11/04 |
| Official title | of the free-piston type |
| Display label | of the free-piston type |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 4 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Attachment for a beverage container
US-12338044-B2 · Jun 24, 2025 · US
Particulate matter filling method and particulate matter filling device
US-2025115382-A1 · Apr 10, 2025 · US
Attachment for a beverage container
US-2024116685-A1 · Apr 11, 2024 · US
Attachment for a beverage container
US-2023264870-A1 · Aug 24, 2023 · US
Self-emptying separator
US-2023241628-A1 · Aug 3, 2023 · US
Dosing apparatus and a container
US-11187565-B2 · Nov 30, 2021 · US
Device for packaging and dispensing a product, notably a pharmaceutical or cosmetic product
US-11162831-B2 · Nov 2, 2021 · US
Rotary piston water meter
US-2021302214-A1 · Sep 30, 2021 · US
Detection device and lubricant distributor
US-10890292-B2 · Jan 12, 2021 · US
Attachment for a beverage container
US-2020361679-A1 · Nov 19, 2020 · US
Syringe with piston assembly
US-10821470-B2 · Nov 3, 2020 · US
Syringe with piston assembly
US-2019314855-A1 · Oct 17, 2019 · US
Liquid dosing apparatus
US-10239671-B2 · Mar 26, 2019 · US
Dosing dispensing closure
US-10071836-B2 · Sep 11, 2018 · US
Liquid dosing apparatus
US-10048106-B2 · Aug 14, 2018 · US
Dosing device for an infusion system and method thereof
US-10034977-B2 · Jul 31, 2018 · US
Dosing device for an infusion system and method thereof
US-10034983-B2 · Jul 31, 2018 · US
Dosing device for an infusion system and method thereof
US-10029046-B2 · Jul 24, 2018 · US
Detection device and lubricant distributor
US-2018119879-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01F11/04?
- CPC G01F11/04 is the Cooperative Patent Classification code for “of the free-piston type.”
- How many patents are filed under CPC G01F11/04 (of the free-piston type)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC G01F11/04 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).