Polymeric microparticles as filtration and/or clarifying aids in phosphoric acid production
US-2019177164-A1 · Jun 13, 2019 · US
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Clarification; Stabilisation to prevent post-precipitation of dissolved impurities
Clarification; Stabilisation to prevent post-precipitation of dissolved impurities · 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 | C01B25/235 |
| Official title | Clarification; Stabilisation to prevent post-precipitation of dissolved impurities |
| Display label | Clarification; Stabilisation to prevent post-precipitation of dissolved impurities |
| Total patents | 8 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polymeric microparticles as filtration and/or clarifying aids in phosphoric acid production
US-10246332-B2 · Apr 2, 2019 · US
Primary amine-containing polymers useful as scale inhibitors
US-10214421-B2 · Feb 26, 2019 · US
Primary amine-containing polymers useful as scale inhibitors
US-2018179062-A1 · Jun 28, 2018 · US
Primary amine-containing polymers useful as scale inhibitors
US-9902617-B2 · Feb 27, 2018 · US
Polymeric microparticles as filtration and/or clarifying aids in phosphoric acid production
US-2017057822-A1 · Mar 2, 2017 · US
Phosphoric acid production gypsum filtration flocculant pre-dilution (make down) with post-filtration phosphoric acid
US-9187327-B2 · Nov 17, 2015 · US
Primary amine-containing polymers useful as scale inhibitors
US-2015225241-A1 · Aug 13, 2015 · US