Hydrogen chloride dehydration method
US-12404172-B2 · Sep 2, 2025 · US
from silicon · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B33/10763 |
| Official title | {from silicon} |
| Display label | from silicon |
| Total patents | 47 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 11 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2025 | 2 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12404172-B2 · Sep 2, 2025 · US
US-2025256970-A1 · Aug 14, 2025 · US
US-11612869-B2 · Mar 28, 2023 · US
US-2022371886-A1 · Nov 24, 2022 · US
US-2022234901-A1 · Jul 28, 2022 · US
US-11241666-B2 · Feb 8, 2022 · US
US-11071961-B2 · Jul 27, 2021 · US
US-11007499-B2 · May 18, 2021 · US
US-10933396-B2 · Mar 2, 2021 · US
US-2020368705-A1 · Nov 26, 2020 · US
US-2020353435-A1 · Nov 12, 2020 · US
US-2020339427-A1 · Oct 29, 2020 · US
US-2020306714-A1 · Oct 1, 2020 · US
US-2020306713-A1 · Oct 1, 2020 · US
US-2020276552-A1 · Sep 3, 2020 · US
US-2020277197-A1 · Sep 3, 2020 · US
US-10696556-B2 · Jun 30, 2020 · US
US-10647583-B2 · May 12, 2020 · US
US-10584035-B2 · Mar 10, 2020 · US
US-10526206-B2 · Jan 7, 2020 · US
Answers are generated from the same data shown on this page.