Extruder feed system
US-10505213-B2 · Dec 10, 2019 · US
with external circulating path
with external circulating path · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M50/77 |
| Official title | with external circulating path |
| Display label | with external circulating path |
| Total patents | 107 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 5 |
| 2017 | 16 |
| 2018 | 10 |
| 2019 | 11 |
| 2020 | 12 |
| 2021 | 6 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 4 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metal air battery
US-10340504-B2 · Jul 2, 2019 · US
Anode and electrolyte for a metal-air battery
US-10326187-B2 · Jun 18, 2019 · US
Corrosion mitigation in metal-air batteries
US-2019123407-A1 · Apr 25, 2019 · US
Radical-ion battery and operation thereof
US-2019088971-A1 · Mar 21, 2019 · US
Battery module of improved safety and battery pack containing the same
US-10236482-B2 · Mar 19, 2019 · US
Lithium air battery
US-2019074536-A1 · Mar 7, 2019 · US
Method of operating redox flow battery, and redox flow battery system
US-10199672-B2 · Feb 5, 2019 · US
Liquid silicon pouch anode and cell
US-10193147-B1 · Jan 29, 2019 · US
Method of operating redox flow battery, and redox flow battery system
US-2018269512-A1 · Sep 20, 2018 · US
Redox flow battery
US-2018212266-A1 · Jul 26, 2018 · US
Liquid activated air battery
US-10020551-B2 · Jul 10, 2018 · US
Battery module with novel structure
US-10020549-B2 · Jul 10, 2018 · US
Metal-air battery
US-10008754-B2 · Jun 26, 2018 · US
Extruder feed system
US-2018166727-A1 · Jun 14, 2018 · US
Metal-air flow batteries using oxygen enriched electrolyte
US-9991545-B2 · Jun 5, 2018 · US
Double-membrane triple-electrolyte redox flow battery design
US-9917323-B2 · Mar 13, 2018 · US
Nonaqueous secondary battery and separator
US-2018069221-A1 · Mar 8, 2018 · US
Extruder feed system
US-9912001-B2 · Mar 6, 2018 · US
Lithium sulfur batteries and electrolytes and sulfur cathodes thereof
US-2017365853-A1 · Dec 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M50/77?
- CPC H01M50/77 is the Cooperative Patent Classification code for “with external circulating path.”
- How many patents are filed under CPC H01M50/77 (with external circulating path)?
- Our database includes 107 publications tagged with this CPC code.
- Is patent activity under CPC H01M50/77 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).