Fibrous Structures and Methods for Making Same
US-2026071388-A1 · Mar 12, 2026 · US
through perforated cylinders
through perforated cylinders · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D21F5/182 |
| Official title | {through perforated cylinders} |
| Display label | through perforated cylinders |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 6 |
| 2021 | 10 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fibrous structures and methods for making same
US-12497736-B2 · Dec 16, 2025 · US
Lotioned fibrous structures and methods for making same
US-2025376810-A1 · Dec 11, 2025 · US
Lotioned fibrous structures and methods for making same
US-12421666-B2 · Sep 23, 2025 · US
Apparatus for and method of measuring suspension flowing in tube fractionator
US-2025277338-A1 · Sep 4, 2025 · US
Through-air apparatus with a shroud
US-2025270763-A1 · Aug 28, 2025 · US
A machine for producing a fibrous web
US-2025250739-A1 · Aug 7, 2025 · US
Apparatus for and method of measuring suspension flowing in tube fractionator
US-12325957-B2 · Jun 10, 2025 · US
Tissue machine and method of using a spiral link fabric in the tissue machine
US-2025179735-A1 · Jun 5, 2025 · US
Laminated papermaking belt
US-12241204-B2 · Mar 4, 2025 · US
System and method for cleaning of belts and/or fabrics used on through air drying papermaking machines
US-12221748-B2 · Feb 11, 2025 · US
Lotioned fibrous structures and methods for making same
US-12084813-B2 · Sep 10, 2024 · US
Fibrous Structures and Methods for Making Same
US-2024295079-A1 · Sep 5, 2024 · US
Lotioned fibrous structures and methods for making same
US-2024287745-A1 · Aug 29, 2024 · US
Fibrous structures and methods for making same
US-12054888-B2 · Aug 6, 2024 · US
Through-air apparatus to reduce infiltration of ambient air
US-12012697-B2 · Jun 18, 2024 · US
Device and method for producing a pulp web
US-11702796-B2 · Jul 18, 2023 · US
Through-air apparatus with cooling system
US-11655590-B1 · May 23, 2023 · US
Device and Method for Producing a Pulp Web
US-2023064891-A1 · Mar 2, 2023 · US
System and method for cleaning of belts and/or fabrics used on through air drying papermaking machines
US-2022389654-A1 · Dec 8, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F5/182?
- CPC D21F5/182 is the Cooperative Patent Classification code for “through perforated cylinders.”
- How many patents are filed under CPC D21F5/182 (through perforated cylinders)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC D21F5/182 growing?
- Publication counts under this code: 5 in 2024 vs 10 in 2025 (latest complete years).