Device for manufacturing cell-derived vesicles and manufacturing method using same
US-2024200008-A1 · Jun 20, 2024 · US
Recirculation of gas
Recirculation of gas · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C12M29/24 |
| Official title | {Recirculation of gas} |
| Display label | Recirculation of gas |
| Total patents | 84 |
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 | 8 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 11 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 11 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid distributor system and process of liquid distribution
US-2023407345-A1 · Dec 21, 2023 · US
Pressure buffering system and biological culture device
US-11834644-B2 · Dec 5, 2023 · US
Cell Culture System
US-2023348832-A1 · Nov 2, 2023 · US
Heat Exchanger System with Flexible Bag
US-2023117671-A1 · Apr 20, 2023 · US
Reaction device for comprehensive determination of biodegradability of materials and its method of use
US-2022364040-A1 · Nov 17, 2022 · US
Heat exchanger system with flexible bag
US-11492582-B2 · Nov 8, 2022 · US
Cell culture system
US-2022340847-A1 · Oct 27, 2022 · US
Systems and methods for removing methane from a gas stream
US-2022315875-A1 · Oct 6, 2022 · US
Photobioreactors, gas concentrators, and periodic surfaces
US-11384329-B2 · Jul 12, 2022 · US
Microfluidic device and method of use for cell culture
US-2022204903-A1 · Jun 30, 2022 · US
Bioreactor with volume-adjustable packing layer
US-2022154124-A1 · May 19, 2022 · US
Aerobic fermentation systems and methods
US-11326139-B2 · May 10, 2022 · US
Apparatus and method for treatment of wet organic matter to produce biogas
US-11268057-B2 · Mar 8, 2022 · US
Pressure buffering system and biological culture device
US-2021395669-A1 · Dec 23, 2021 · US
Cell culture apparatus
US-11174457-B2 · Nov 16, 2021 · US
Digester comprising a desulfurization net combined with pendent ropes
US-2021179508-A1 · Jun 17, 2021 · US
Cell culture chamber with improved cell-contacting surfaces
US-2021123008-A1 · Apr 29, 2021 · US
System for the production of methane from co2
US-2021115477-A1 · Apr 22, 2021 · US
Photobioreactors, gas concentrators, and periodic surfaces
US-2021087513-A1 · Mar 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C12M29/24?
- CPC C12M29/24 is the Cooperative Patent Classification code for “Recirculation of gas.”
- How many patents are filed under CPC C12M29/24 (Recirculation of gas)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC C12M29/24 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).