Board with fiber-reinforced dense layer
US-12415765-B2 · Sep 16, 2025 · US
Paper, e.g. waste paper; Paper pulp
Paper, e.g. waste paper; Paper pulp · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B18/241 |
| Official title | {Paper, e.g. waste paper; Paper pulp} |
| Display label | Paper, e.g. waste paper; Paper pulp |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 6 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spray-Applicable Joint Tape for Drywall Constructions
US-2024336524-A1 · Oct 10, 2024 · US
Conversion of gypsum waste into foamed construction material
US-11840484-B2 · Dec 12, 2023 · US
System for manufacturing cementitious product with secondary discharge conduit having additive injection system
US-2023146619-A1 · May 11, 2023 · US
Composite products and the manufacture thereof
US-2023082178-A1 · Mar 16, 2023 · US
Compositions and methods for providing increased strength in ceiling, flooring, and building products
US-2023060416-A1 · Mar 2, 2023 · US
High Acoustic and Low Density Basemat
US-2023035178-A1 · Feb 2, 2023 · US
Board with fiber-reinforced dense layer
US-2023021340-A1 · Jan 26, 2023 · US
Compositions and methods for providing increased strength in ceiling, flooring, and building products
US-11512020-B2 · Nov 29, 2022 · US
Conversion of gypsum waste into foamed construction material
US-2022162126-A1 · May 26, 2022 · US
Light weight gypsum board
US-11306028-B2 · Apr 19, 2022 · US
Use of CO2 as Water Demand Reducer in Gypsum Stucco Rehydration Mortars
US-2022017420-A1 · Jan 20, 2022 · US
Nanocellulose foam stabilizing additive
US-10766813-B2 · Sep 8, 2020 · US
Removable composite insulated concrete form, insulated precast concrete table and method of accelerating concrete curing using same
US-10744674-B2 · Aug 18, 2020 · US
Compositions and methods for providing increased strength in ceiling, flooring, and building products
US-2020248408-A1 · Aug 6, 2020 · US
Gypsum fiber board and method for producing gypsum fiber boards
US-2020181022-A1 · Jun 11, 2020 · US
Ceiling tile compositions comprising microfibrillated cellulose and methods for making same
US-10669671-B2 · Jun 2, 2020 · US
Gypsum fiber board and method for producing gypsum fiber boards
US-10562817-B2 · Feb 18, 2020 · US
Low dust gypsum wallboard
US-2019382311-A1 · Dec 19, 2019 · US
Light weight gypsum board
US-10407345-B2 · Sep 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B18/241?
- CPC C04B18/241 is the Cooperative Patent Classification code for “Paper, e.g. waste paper; Paper pulp.”
- How many patents are filed under CPC C04B18/241 (Paper, e.g. waste paper; Paper pulp)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C04B18/241 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).