Elongated tubular articles from wet-laid webs
US-2020063349-A1 · Feb 27, 2020 · US
Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines · 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 | D21F11/00 |
| Official title | Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines |
| Display label | Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines |
| Total patents | 165 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 19 |
| 2017 | 6 |
| 2018 | 13 |
| 2019 | 16 |
| 2020 | 10 |
| 2021 | 22 |
| 2022 | 18 |
| 2023 | 22 |
| 2024 | 16 |
| 2025 | 16 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Web forming device and sheet manufacturing apparatus
US-2019381690-A1 · Dec 19, 2019 · US
Unitary Deflection Member for Making Fibrous Structures Having Increased Surface Area and Process for Making Same
US-2019330800-A1 · Oct 31, 2019 · US
Method for manufacturing intermediate product for conversion into microfibrillated cellulose
US-2019292727-A1 · Sep 26, 2019 · US
Sheet manufacturing apparatus and sheet manufacturing method
US-10407828-B2 · Sep 10, 2019 · US
Soft absorbent sheets, structuring fabrics for making soft absorbent sheets, and methods of making soft absorbent sheets
US-2019257035-A1 · Aug 22, 2019 · US
Unitary deflection member for making fibrous structures having increased surface area and process for making same
US-10385509-B2 · Aug 20, 2019 · US
Method for the production of a film comprising microfibrillated cellulose and a film comprising microfibrillated cellulose
US-2019248988-A1 · Aug 15, 2019 · US
Method and System for Increasing the Thickness of a Carbon Nanotube Sheet Structure
US-2019247799-A1 · Aug 15, 2019 · US
Absorbent paper product and method for manufacturing such absorbent paper product
US-10344432-B2 · Jul 9, 2019 · US
System and methods involving fabricating sheet products
US-10337793-B2 · Jul 2, 2019 · US
Soft absorbent sheets, structuring fabrics for making soft absorbent sheets, and methods of making soft absorbent sheets
US-10329716-B2 · Jun 25, 2019 · US
Texture subtractive patterning
US-10280567-B2 · May 7, 2019 · US
Processes for extracting trichomes from plants and fibrous structures employing same
US-10227729-B2 · Mar 12, 2019 · US
Application of Model Predictive Control (MPC)-Based Forced Ramping of Process Input Variables and Process Output Reference Trajectory Design Over a Prediction Horizon for MPC-Based Paper Machine Grade Change Control
US-2019064754-A1 · Feb 28, 2019 · US
Molding roll for making paper products
US-2019032279-A1 · Jan 31, 2019 · US
Absorbent paper product and method for manufacturing such absorbent paper product
US-2019003127-A1 · Jan 3, 2019 · US
Flame-retardant sheet-forming body, method for producing flame-retardant sheet-formed product, and method for producing flame-retardant sheet-forming body
US-2018355168-A1 · Dec 13, 2018 · US
Process for producing at least one ply of a paper or board and a paper or board produced according to the process
US-10145068-B2 · Dec 4, 2018 · US
Sheet manufacturing apparatus
US-10137614-B2 · Nov 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F11/00?
- CPC D21F11/00 is the Cooperative Patent Classification code for “Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines.”
- How many patents are filed under CPC D21F11/00 (Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines)?
- Our database includes 165 publications tagged with this CPC code.
- Is patent activity under CPC D21F11/00 growing?
- Publication counts under this code: 16 in 2024 vs 16 in 2025 (latest complete years).