Cutting fluid circulation device
US-2024325949-A1 · Oct 3, 2024 · US
with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence {; rotating drums for paper-making D21B})
with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence {; rotating drums for paper-making D21B}) · 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 | B01D33/06 |
| Official title | with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence {; rotating drums for paper-making D21B}) |
| Display label | with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence {; rotating drums for paper-making D21B}) |
| Total patents | 67 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 7 |
| 2020 | 8 |
| 2021 | 9 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary drum vacuum filter with a throttling valve
US-11980837-B2 · May 14, 2024 · US
Filter unit lifting system
US-2024082757-A1 · Mar 14, 2024 · US
Systems and methods for automated recovery of white blood cells after producing a leuko-reduced blood product
US-11850347-B2 · Dec 26, 2023 · US
Roller filtration apparatus
US-2023311030-A1 · Oct 5, 2023 · US
Screening apparatus for removing solid material from flowing liquid and associated screening panel
US-2022331722-A1 · Oct 20, 2022 · US
Closed loop recycling system and dip tank for antimicrobial compounds
US-2022304319-A1 · Sep 29, 2022 · US
Closed loop recycling system and dip tank for antimicrobial compounds
US-11432559-B2 · Sep 6, 2022 · US
Bottle-processing machine and method for cleaning the pump/nozzle protector of the bottle-processing machine
US-11358077-B2 · Jun 14, 2022 · US
Print agent filtration
US-2021341857-A1 · Nov 4, 2021 · US
Oil, debris separator, filter and muffler structure
US-2021331106-A1 · Oct 28, 2021 · US
Vacuum filter
US-2021252436-A1 · Aug 19, 2021 · US
Furan-2, 5-dicarboxylic acid purge process
US-11027219-B2 · Jun 8, 2021 · US
Device for treating an effluent and method for treating an effluent
US-11007460-B2 · May 18, 2021 · US
Rotary disc filter having backwash guides
US-11000791-B2 · May 11, 2021 · US
Systems and methods for automated recovery of white blood cells after producing a leuko-reduced blood product
US-2021106747-A1 · Apr 15, 2021 · US
Filter panel with structures support grid and drum filter with said filter panel
US-10946318-B2 · Mar 16, 2021 · US
Systems and methods for automated recovery of white blood cells after producing a leuko-reduced blood product
US-10905819-B2 · Feb 2, 2021 · US
Rotary disc filter having backwash guides
US-2020282345-A1 · Sep 10, 2020 · US
Pressure control device
US-2020276522-A1 · Sep 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D33/06?
- CPC B01D33/06 is the Cooperative Patent Classification code for “with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence {; rotating drums for paper-making D21B}).”
- How many patents are filed under CPC B01D33/06 (with rotary cylindrical filtering surfaces, e.g. hollow drums (B01D33/044 takes precedence {; rotating drums for paper-making D21B}))?
- Our database includes 67 publications tagged with this CPC code.
- Is patent activity under CPC B01D33/06 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).