Cementitious mixtures, compositions for use in cementitious mixtures, and methods of producing cementitious mixtures
US-10081573-B2 · Sep 25, 2018 · US
Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles · 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 | C04B24/2652 |
| Official title | {Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles} |
| Display label | Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles |
| Total patents | 210 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 17 |
| 2017 | 25 |
| 2018 | 33 |
| 2019 | 22 |
| 2020 | 17 |
| 2021 | 25 |
| 2022 | 12 |
| 2023 | 9 |
| 2024 | 18 |
| 2025 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modified cellulose ether with improved workability for use in gypsum smoothing mortar and joint filler applications
US-2018044239-A1 · Feb 15, 2018 · US
Hydrophobic, cationic polymers for treating construction aggregates
US-9828500-B2 · Nov 28, 2017 · US
Salt-tolerant, thermally-stable rheology modifiers
US-2017335162-A1 · Nov 23, 2017 · US
Gypsum slurries with linear polycarboxylate dispersants
US-2017334778-A1 · Nov 23, 2017 · US
Vulcanized oil and water swellable particulate composite compositions
US-9822295-B2 · Nov 21, 2017 · US
Methods and compositions for treating a subterranean formation with salt-tolerant cement slurries
US-9796905-B2 · Oct 24, 2017 · US
Treatment of tailing streams
US-9789457-B2 · Oct 17, 2017 · US
Cement mortar composition
US-2017260094-A1 · Sep 14, 2017 · US
Methods of using improved bentonite barrier compositions and related geosynthetic clay liners
US-9758432-B2 · Sep 12, 2017 · US
Plasticizer having cationic side chains without polyether side chains
US-9758608-B2 · Sep 12, 2017 · US
Thermally enhanced HDD grout
US-9758433-B2 · Sep 12, 2017 · US
A process for hydrophobization of concrete
US-2017240468-A1 · Aug 24, 2017 · US
Compositions and methods for cementing wells
US-9738822-B2 · Aug 22, 2017 · US
Amphoteric polymer suspending agent for use in calcium aluminate cement compositions
US-9738821-B2 · Aug 22, 2017 · US
Shrinkage-reducing agent for hydraulic material
US-2017226012-A1 · Aug 10, 2017 · US
Emulsion polymer two-component compositions for fast curing cementitious waterproofing membranes
US-2017226013-A1 · Aug 10, 2017 · US
Oil absorbent oilfield materials as additives in oil-based drilling fluid applications
US-9701881-B2 · Jul 11, 2017 · US
Self-repairing cements
US-9683161-B2 · Jun 20, 2017 · US
Methods of using downhole compositions including an ion-sequestering compound
US-9650299-B2 · May 16, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B24/2652?
- CPC C04B24/2652 is the Cooperative Patent Classification code for “Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles.”
- How many patents are filed under CPC C04B24/2652 (Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles)?
- Our database includes 210 publications tagged with this CPC code.
- Is patent activity under CPC C04B24/2652 growing?
- Publication counts under this code: 18 in 2024 vs 16 in 2025 (latest complete years).