Medical oxygen humidification device
US-2025319275-A1 · Oct 16, 2025 · US
Intermediate chambers
Intermediate chambers · 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 | B01D2313/32 |
| Official title | Intermediate chambers |
| Display label | Intermediate chambers |
| Total patents | 28 |
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 | 4 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method
US-12371799-B2 · Jul 29, 2025 · US
Blood processing unit with modified flow path
US-12171923-B2 · Dec 24, 2024 · US
Ultrapure water suppy apparatus, substrate processing system including the same, and substrate processing method using the same
US-2023303416-A1 · Sep 28, 2023 · US
System and method of treating waste water
US-11673818-B2 · Jun 13, 2023 · US
System and method of treating waste water
US-2022204367-A1 · Jun 30, 2022 · US
Blood processing unit with modified flow path
US-2022023519-A1 · Jan 27, 2022 · US
Acidic treatment liquid processing apparatus and acidic treatment liquid processing method
US-2021339198-A1 · Nov 4, 2021 · US
Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method
US-2021339199-A1 · Nov 4, 2021 · US
Blood processing unit with modified flow path
US-11160912-B2 · Nov 2, 2021 · US
Sheet-shaped hollow fiber membrane module and membrane separation unit
US-11000808-B2 · May 11, 2021 · US
Hollow fiber membrane module
US-10668432-B2 · Jun 2, 2020 · US
Osmotic distillation process for concentrating a liquid containing sodium chloride
US-10640399-B2 · May 5, 2020 · US
Hemotransfiltration hollow fiber device
US-10512717-B2 · Dec 24, 2019 · US
Filtration device
US-10493407-B2 · Dec 3, 2019 · US
Sheet-shaped hollow fiber membrane module and membrane separation unit
US-2019201850-A1 · Jul 4, 2019 · US
Blood processing unit with modified flow path
US-2019091395-A1 · Mar 28, 2019 · US
Hollow fiber membrane module
US-2019015787-A1 · Jan 17, 2019 · US
Blood processing unit with modified flow path
US-10159777-B2 · Dec 25, 2018 · US
Osmotic distillation process for concentrating a liquid containing sodium chloride
US-2018186665-A1 · Jul 5, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2313/32?
- CPC B01D2313/32 is the Cooperative Patent Classification code for “Intermediate chambers.”
- How many patents are filed under CPC B01D2313/32 (Intermediate chambers)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC B01D2313/32 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).