Method for production of elemental sulfur and sulfuric acid
US-12545580-B2 · Feb 10, 2026 · US
Process control; Start-up or cooling-down procedures of the Claus process
Process control; Start-up or cooling-down procedures of the Claus process · 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 | C01B17/0452 |
| Official title | {Process control; Start-up or cooling-down procedures of the Claus process} |
| Display label | Process control; Start-up or cooling-down procedures of the Claus process |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Adaptive control of BTX removal in sulfur recovery units
US-12415725-B2 · Sep 16, 2025 · US
Method and apparatus for controlling claus process based on reinforcement learning
US-2024419131-A1 · Dec 19, 2024 · US
Adaptive control of btx removal in sulfur recovery units
US-2024140796-A1 · May 2, 2024 · US
Sulfur Recovery Unit with Fuel Gas Firing
US-2023365406-A1 · Nov 16, 2023 · US
Method for production of elemental sulfur by part or fully catalytic oxidation of Claus tail gas
US-11807527-B2 · Nov 7, 2023 · US
Sulfur recovery unit oxidation air management during SuperClaus to Claus switching
US-11772970-B1 · Oct 3, 2023 · US
Method for production of sulfur and sulfuric acid
US-11691877-B2 · Jul 4, 2023 · US
Revamping of a claus plant with a sulfuric acid plan
US-11618677-B2 · Apr 4, 2023 · US
Method for production of elemental sulfur by part or fully catalytic oxidation of claus tail gas
US-2022234891-A1 · Jul 28, 2022 · US
Method for production of elemental sulfur and sulfuric acid
US-2022227625-A1 · Jul 21, 2022 · US
Revamping of a claus plant with a sulfuric acid plan
US-2022177306-A1 · Jun 9, 2022 · US
Method for production of sulfur and sulfuric acid
US-2022177307-A1 · Jun 9, 2022 · US
Advanced heat integration in sulfur recovery unit—SafarClaus
US-10954127-B2 · Mar 23, 2021 · US
Advanced heat integration in sulfur recovery unit—SafarClaus
US-10954126-B2 · Mar 23, 2021 · US
Advanced Heat Integration in Sulfur Recovery Unit - SafarClaus
US-2020239308-A1 · Jul 30, 2020 · US
Advanced Heat Integration in Sulfur Recovery Unit - SafarClaus
US-2020239309-A1 · Jul 30, 2020 · US
Advanced heat integration in sulfur recovery unit—SafarClaus
US-10676356-B2 · Jun 9, 2020 · US
Claus unit treatment of shutdown tail gas
US-10618005-B2 · Apr 14, 2020 · US
Advanced Heat Integration in Sulfur Recovery Unit - SafarClaus
US-2019300368-A1 · Oct 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B17/0452?
- CPC C01B17/0452 is the Cooperative Patent Classification code for “Process control; Start-up or cooling-down procedures of the Claus process.”
- How many patents are filed under CPC C01B17/0452 (Process control; Start-up or cooling-down procedures of the Claus process)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC C01B17/0452 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).