Rotary disc filter having a backwash system that includes a compact nozzle support structure
US-11801464-B2 · Oct 31, 2023 · US
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the backwash arms, shoes acting on the cake side
the backwash arms, shoes acting on the cake side · 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 | B01D33/503 |
| Official title | {the backwash arms, shoes acting on the cake side} |
| Display label | the backwash arms, shoes acting on the cake side |
| Total patents | 12 |
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 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary Disc Filter Having a Backwash System that Includes a Compact Nozzle Support Structure
US-2022168673-A1 · Jun 2, 2022 · US
Rotary disc filter having a backwash system that includes a compact nozzle support structure
US-11291935-B2 · Apr 5, 2022 · US
Water treatment device
US-2020230531-A1 · Jul 23, 2020 · US
Rotary disc filter having a backwash system that includes a compact nozzle support structure
US-2019314743-A1 · Oct 17, 2019 · US
Ballast water treatment device
US-10058806-B2 · Aug 28, 2018 · US
Ballast water treatment device
US-2018111069-A1 · Apr 26, 2018 · US
Ballast water treatment device
US-2017151513-A1 · Jun 1, 2017 · US
Pleated filter, ballast water treatment apparatus, and ballast water treatment method using the same
US-2016271532-A1 · Sep 22, 2016 · US
Ballast water treatment device
US-2016236122-A1 · Aug 18, 2016 · US
Pleated filter, ballast water treatment apparatus, and ballast water treatment method using the same
US-2016144303-A1 · May 26, 2016 · US
Method and apparatus for treating water and controlling effluent surges produced by disc and drum filters
US-8926843-B2 · Jan 6, 2015 · US