Counterlung for a rebreathing apparatus
US-12377295-B2 · Aug 5, 2025 · US
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in closed circulation
in closed circulation · 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 | B63C11/24 |
| Official title | in closed circulation |
| Display label | in closed circulation |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Carbon dioxide absorber for a rebreather
US-12285569-B2 · Apr 29, 2025 · US
Body suit with distributed air supply
US-2024351672-A1 · Oct 24, 2024 · US
Rebreather and process for checking the functional readiness of a rebreather
US-2024246647-A1 · Jul 25, 2024 · US
Diving apparatus and diving system
US-12006008-B2 · Jun 11, 2024 · US
Enclosed system environment pressure regulator
US-11701527-B2 · Jul 18, 2023 · US
Apparatus and method for self contained breathing
US-2022063782-A1 · Mar 3, 2022 · US
Enclosed System Environment Pressure Regulator
US-2022062663-A1 · Mar 3, 2022 · US
Carbon dioxide absorber for a rebreather
US-2022008686-A1 · Jan 13, 2022 · US
Diving apparatus and diving system
US-2021394878-A1 · Dec 23, 2021 · US
Respiratory protection hood
US-11154733-B2 · Oct 26, 2021 · US
Respiratory protection hood
US-2018296863-A1 · Oct 18, 2018 · US
Breathing circuit device
US-9950196-B2 · Apr 24, 2018 · US
Device and method for determining processing capacity
US-9733190-B2 · Aug 15, 2017 · US