Antimicrobial system and method
US-2024383784-A1 · Nov 21, 2024 · US
Pulp catching, de-watering, or recovering; Re-use of pulp-water
Pulp catching, de-watering, or recovering; Re-use of pulp-water · 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 | D21F1/66 |
| Official title | Pulp catching, de-watering, or recovering; Re-use of pulp-water |
| Display label | Pulp catching, de-watering, or recovering; Re-use of pulp-water |
| Total patents | 69 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dewatering box cover
US-12146265-B2 · Nov 19, 2024 · US
Method for manufacturing a barrier film comprising highly refined cellulose
US-2024229358-A9 · Jul 11, 2024 · US
Process and System for Controlling Temperature of a Circulating Foamed Fluid
US-2024175209-A1 · May 30, 2024 · US
Method for manufacturing a barrier film comprising highly refined cellulose
US-2024133118-A1 · Apr 25, 2024 · US
Foam-based manufacturing system and process
US-11932988-B2 · Mar 19, 2024 · US
Process and system for controlling temperature of a circulating foamed fluid
US-11920298-B2 · Mar 5, 2024 · US
Device for producing a composite nonwoven web
US-2024044059-A1 · Feb 8, 2024 · US
Process and System for Controlling Temperature of a Circulating Foamed Fluid
US-2023399799-A1 · Dec 14, 2023 · US
Sheet manufacturing method and sheet manufacturing apparatus
US-11807988-B2 · Nov 7, 2023 · US
Process and apparatus for wetlaying nonwovens
US-11807986-B2 · Nov 7, 2023 · US
Powder collection unit and fiber processing apparatus
US-11767637-B2 · Sep 26, 2023 · US
Sheet manufacturing apparatus and sheet manufacturing method
US-11753768-B2 · Sep 12, 2023 · US
Method of making a molded paper web
US-11732416-B2 · Aug 22, 2023 · US
System and method for mill effluent biological oxygen demand (BOD) reduction
US-11692309-B2 · Jul 4, 2023 · US
Process for production of nano-coated substrate
US-2023132010-A1 · Apr 27, 2023 · US
Foam-based manufacturing system and process
US-2023074870-A1 · Mar 9, 2023 · US
Sheet manufacturing apparatus and sheet manufacturing method
US-2022364306-A1 · Nov 17, 2022 · US
Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance
US-2022325473-A1 · Oct 13, 2022 · US
Sheet manufacturing method and sheet manufacturing apparatus
US-2022316138-A1 · Oct 6, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21F1/66?
- CPC D21F1/66 is the Cooperative Patent Classification code for “Pulp catching, de-watering, or recovering; Re-use of pulp-water.”
- How many patents are filed under CPC D21F1/66 (Pulp catching, de-watering, or recovering; Re-use of pulp-water)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC D21F1/66 growing?
- Publication counts under this code: 12 in 2024 vs 5 in 2025 (latest complete years).