Strong and tough structural wood materials, and methods for fabricating and use thereof
US-2025162189-A1 · May 22, 2025 · US
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sodium bisulfite
sodium bisulfite · 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 | D21C3/12 |
| Official title | sodium bisulfite |
| Display label | sodium bisulfite |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Strong and tough structural wood materials, and methods for fabricating and use thereof
US-12285882-B2 · Apr 29, 2025 · US
Method of transforming high consistency pulp fibers into pre-dispersed semi-dry and dry fibrous materials
US-11834785-B2 · Dec 5, 2023 · US
Strong and tough structural wood materials, and methods for fabricating and use thereof
US-2023166427-A1 · Jun 1, 2023 · US
Strong and tough structural wood materials, and methods for fabricating and use thereof
US-11554514-B2 · Jan 17, 2023 · US
Method for producing a fibrous material
US-11535983-B2 · Dec 27, 2022 · US
Strong and tough structural wood materials, and methods for fabricating and use thereof
US-2022040881-A1 · Feb 10, 2022 · US
Strong and tough structural wood materials, and methods for fabricating and use thereof
US-11130256-B2 · Sep 28, 2021 · US
Method of transforming high consistency pulp fibers into pre-dispersed semi-dry and dry fibrous materials
US-2021285156-A1 · Sep 16, 2021 · US
Strong and tough structural wood materials, and methods for fabricating and use thereof
US-2020223091-A1 · Jul 16, 2020 · US
Method for Producing a Fibrous Material
US-2019352849-A1 · Nov 21, 2019 · US
Process for producing increased bulk pulp fibers, pulp fibers obtained, and products incorporating same
US-10280559-B2 · May 7, 2019 · US
Process for producing increased bulk pulp fibers, pulp fibers obtained, and products incorporating same
US-2018127919-A1 · May 10, 2018 · US