Fiber assisted re-crosslinkable polymer gel and preformed particle gels for fluid loss and conformance control
US-2020407622-A1 · Dec 31, 2020 · US
Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork}
Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork} · 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 | C04B18/24 |
| Official title | Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork} |
| Display label | Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork} |
| Total patents | 111 |
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 | 9 |
| 2016 | 10 |
| 2017 | 7 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 13 |
| 2021 | 14 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Multi-slug staged plugging method applicable to fractured formation
US-2020392809-A1 · Dec 17, 2020 · US
Cellulose nanofibers in extended cement systems
US-2020377778-A1 · Dec 3, 2020 · US
Cement composition and hardened body of the same
US-2020369567-A1 · Nov 26, 2020 · US
Engineered cementitious composites
US-2020317572-A1 · Oct 8, 2020 · US
Compositions and methods for servicing subterranean wells
US-10662366-B2 · May 26, 2020 · US
Method for applying a wallpaper material
US-10577805-B2 · Mar 3, 2020 · US
Subterranean formation processing composition comprising ultrafine cellulose fibers
US-10550305-B2 · Feb 4, 2020 · US
Pregelatinized starch with mid-range viscosity, and product, slurry and methods related thereto
US-10464847-B2 · Nov 5, 2019 · US
Colloidal vesicles for use as dedusting agents in construction panels
US-2019322583-A1 · Oct 24, 2019 · US
Cellulose nanofibers in extended cement systems
US-2019309211-A1 · Oct 10, 2019 · US
Method of recycling chitosan and graphene oxide compound
US-10414659-B2 · Sep 17, 2019 · US
Reinforced building block made of autoclaved aerated concrete (AAC)
US-10384977-B2 · Aug 20, 2019 · US
Converting biomass to fermentative products
US-10378033-B2 · Aug 13, 2019 · US
Repair compound and methods of use
US-10273185-B2 · Apr 30, 2019 · US
Completion tools with fluid diffusion control layer
US-2019092998-A1 · Mar 28, 2019 · US
Cementitious inorganic material containing cellulosic nanofibers
US-2019062211-A1 · Feb 28, 2019 · US
Use of CSH-seed modified fibers in oil field applications
US-10214676-B2 · Feb 26, 2019 · US
Method of recycling chitosan and graphene oxide compound
US-2019047869-A1 · Feb 14, 2019 · US
Aerogel compositions and methods of making and using them
US-10196814-B2 · Feb 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B18/24?
- CPC C04B18/24 is the Cooperative Patent Classification code for “Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork}.”
- How many patents are filed under CPC C04B18/24 (Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork})?
- Our database includes 111 publications tagged with this CPC code.
- Is patent activity under CPC C04B18/24 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).