Synthesis of phosphonated polymer resins for the extraction of rare-earth elements
US-2025188222-A1 · Jun 12, 2025 · US
from polyamines and epihalohydrins
from polyamines and epihalohydrins · 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 | C08G73/022 |
| Official title | {from polyamines and epihalohydrins} |
| Display label | from polyamines and epihalohydrins |
| Total patents | 59 |
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 | 7 |
| 2016 | 5 |
| 2017 | 14 |
| 2018 | 12 |
| 2019 | 3 |
| 2020 | 8 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polymer, leveling agent and preparation method thereof, electroplating solution, and electroplating method
US-2024254277-A1 · Aug 1, 2024 · US
Functionalised hydrogels
US-2024173696-A1 · May 30, 2024 · US
Carboxylated vinyl acetate/ethylene copolymer dispersions and uses thereof
US-11773263-B2 · Oct 3, 2023 · US
Epoxide-activated substrates and hydrophobic interaction chromatography made therefrom for polynucleotide purification
US-2023010637-A1 · Jan 12, 2023 · US
Ethyleneimine polymer solution and method for producing same
US-11332616-B2 · May 17, 2022 · US
Carboxylated vinyl acetate/ethylene copolymer dispersions and uses therof
US-11214684-B2 · Jan 4, 2022 · US
Carboxylated Vinyl Acetate/Ethylene Copolymer Dispersions and Uses Thereof
US-2021363350-A1 · Nov 25, 2021 · US
Polyamines, synthesis method thereof and use thereof for the selective elimination of H2S from a gaseous effluent comprising CO2
US-11136434-B2 · Oct 5, 2021 · US
Methods and compositions for clarifying produced waters for boiler feed waters
US-10934189-B2 · Mar 2, 2021 · US
Ethyleneimine polymer solution and method for producing same
US-2020362168-A1 · Nov 19, 2020 · US
Substoichiometric alkoxylated polyethers
US-10808075-B2 · Oct 20, 2020 · US
Novel polyamines, synthesis method thereof and use thereof for the selective elimination of h2s from a gaseous effluent comprising co2
US-2020148824-A1 · May 14, 2020 · US
Ligand functionalized polymers
US-2020102345-A1 · Apr 2, 2020 · US
Method for Controlling Clay Impurities in Construction Aggregates and Cementitious Compositions
US-2020062649-A1 · Feb 27, 2020 · US
Oligomer-polymer and lithium battery
US-10566626-B2 · Feb 18, 2020 · US
Method for producing a water-soluble thermally-crosslinkable polymeric material
US-10526470-B2 · Jan 7, 2020 · US
Ligand functionalized polymers
US-10526366-B2 · Jan 7, 2020 · US
Oligomer-polymer and lithium battery
US-2019379046-A1 · Dec 12, 2019 · US
Graft copolymer functionalized article
US-10471398-B2 · Nov 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G73/022?
- CPC C08G73/022 is the Cooperative Patent Classification code for “from polyamines and epihalohydrins.”
- How many patents are filed under CPC C08G73/022 (from polyamines and epihalohydrins)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC C08G73/022 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).