Sheet manufacturing apparatus and sheet manufacturing method
US-12553183-B2 · Feb 17, 2026 · US
of the cylinder type
of the cylinder type · 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 | D21F9/04 |
| Official title | of the cylinder type |
| Display label | of the cylinder type |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 2 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 7 |
| 2024 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device and method for producing a fibrous web
US-12006631-B2 · Jun 11, 2024 · US
Sheet manufacturing apparatus and sheet manufacturing method
US-2024110334-A1 · Apr 4, 2024 · US
Defibrating apparatus and fiber body manufacturing apparatus
US-11851817-B2 · Dec 26, 2023 · US
Defibrating apparatus and fiber body manufacturing apparatus
US-11846071-B2 · Dec 19, 2023 · US
Sheet manufacturing method and sheet manufacturing apparatus
US-11807988-B2 · Nov 7, 2023 · US
Molding roll for making paper products
US-11802375-B2 · Oct 31, 2023 · US
Defibrating apparatus and fiber body manufacturing apparatus
US-2023029664-A1 · Feb 2, 2023 · US
Defibrating apparatus and fiber body manufacturing apparatus
US-2023034767-A1 · Feb 2, 2023 · US
Device and Method for Producing a Fibrous Web
US-2023030264-A1 · Feb 2, 2023 · US
Sheet manufacturing method and sheet manufacturing apparatus
US-2022316138-A1 · Oct 6, 2022 · US
Defibration treatment apparatus and fiber processing apparatus
US-11162215-B2 · Nov 2, 2021 · US
Molding roll for making paper products
US-2021087749-A1 · Mar 25, 2021 · US
Molding roll for making paper products
US-10927502-B2 · Feb 23, 2021 · US
Defibration treatment apparatus and fiber processing apparatus
US-2020299898-A1 · Sep 24, 2020 · US
Molding roll for making paper products
US-2019032279-A1 · Jan 31, 2019 · US
Electrotype for forming an image during a paper making process
US-9739014-B2 · Aug 22, 2017 · US
Sheet manufacturing apparatus
US-9476161-B2 · Oct 25, 2016 · US
Sheet manufacturing apparatus
US-9428862-B2 · Aug 30, 2016 · US
Methods and apparatuses for controlling a manufacturing line used to convert a paper web into paper products by reading marks on the paper web
US-2015292163-A1 · Oct 15, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F9/04?
- CPC D21F9/04 is the Cooperative Patent Classification code for “of the cylinder type.”
- How many patents are filed under CPC D21F9/04 (of the cylinder type)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC D21F9/04 growing?
- Publication counts under this code: 7 in 2023 vs 2 in 2024 (latest complete years).