Oxygen-based control of polymerization reactions
US-2025339830-A1 · Nov 6, 2025 · US
Means for starting up the reaction
Means for starting up the reaction · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J2208/00646 |
| Official title | Means for starting up the reaction |
| Display label | Means for starting up the reaction |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process and apparatus for reacting feed with a fluidized catalyst with a reduction in catalyst loss during startup
US-12453966-B2 · Oct 28, 2025 · US
Polymerization process for olefins
US-12440817-B2 · Oct 14, 2025 · US
Gas-liquid reaction method
US-2024336553-A1 · Oct 10, 2024 · US
Start-up method for contacting a feed stream with fluidized catalyst
US-12012557-B2 · Jun 18, 2024 · US
Process and apparatus for reacting feed with a fluidized catalyst with a reduction in catalyst loss during startup
US-2023211331-A1 · Jul 6, 2023 · US
Start-up method for contacting a feed stream with fluidized catalyst
US-2023203385-A1 · Jun 29, 2023 · US
Polymerization process for olefins
US-2022339592-A1 · Oct 27, 2022 · US
Process for hydroformylation of short-chain olefins in the gas phase
US-11384042-B2 · Jul 12, 2022 · US
Transalkylation start-up processes for supported precious metal catalyst
US-11331658-B2 · May 17, 2022 · US
Process for preparing short-chain olefins in the gas phase
US-2021340091-A1 · Nov 4, 2021 · US
Preheating process and start-up process for the ammoxidation reaction
US-11091407-B2 · Aug 17, 2021 · US
Transalkylation Start-Up Processes for Supported Precious Metal Catalyst
US-2020306744-A1 · Oct 1, 2020 · US
Method for startup of a gas phase polymerization reactor
US-10787526-B2 · Sep 29, 2020 · US
Preheating process and start-up process for the ammoxidation reaction
US-2020181039-A1 · Jun 11, 2020 · US
Loading a catalyst into a bubble column for Fischer-Topsch synthesis
US-10576444-B2 · Mar 3, 2020 · US
Methods for producing chemical products with operation interruptions
US-10513487-B2 · Dec 24, 2019 · US
Method for startup of a gas phase polymerization reactor
US-2019309098-A1 · Oct 10, 2019 · US
Loading a catalyst into a bubble column for fischer-topsch synthesis
US-2018369776-A1 · Dec 27, 2018 · US
Method for production of polymer
US-9926390-B2 · Mar 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J2208/00646?
- CPC B01J2208/00646 is the Cooperative Patent Classification code for “Means for starting up the reaction.”
- How many patents are filed under CPC B01J2208/00646 (Means for starting up the reaction)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC B01J2208/00646 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).