using weight changes of the crystal or the melt, e.g. flotation methods · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C30B15/28 |
| Official title | using weight changes of the crystal or the melt, e.g. flotation methods |
| Display label | using weight changes of the crystal or the melt, e.g. flotation methods |
| Total patents | 23 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12595585-B2 · Apr 7, 2026 · US
US-2025305179-A1 · Oct 2, 2025 · US
US-2025129507-A1 · Apr 24, 2025 · US
US-12188146-B2 · Jan 7, 2025 · US
US-2024060208-A1 · Feb 22, 2024 · US
US-2023366123-A1 · Nov 16, 2023 · US
US-2023332326-A1 · Oct 19, 2023 · US
US-11437773-B2 · Sep 6, 2022 · US
US-2022220630-A1 · Jul 14, 2022 · US
US-2020388981-A1 · Dec 10, 2020 · US
US-10214834-B2 · Feb 26, 2019 · US
US-10125431-B2 · Nov 13, 2018 · US
US-10113247-B2 · Oct 30, 2018 · US
US-2017356100-A1 · Dec 14, 2017 · US
US-2017292205-A1 · Oct 12, 2017 · US
US-2017183792-A1 · Jun 29, 2017 · US
US-9657407-B2 · May 23, 2017 · US
US-2016153117-A1 · Jun 2, 2016 · US
US-2015197874-A1 · Jul 16, 2015 · US
US-9050652-B2 · Jun 9, 2015 · US