Automatic supply and replacement device of electrode plate for manufacturing secondary battery
US-2024243330-A1 · Jul 18, 2024 · US
Fuel cell manufacture
Fuel cell manufacture · 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 | B65H2801/72 |
| Official title | Fuel cell manufacture |
| Display label | Fuel cell manufacture |
| Total patents | 347 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 14 |
| 2017 | 10 |
| 2018 | 19 |
| 2019 | 13 |
| 2020 | 12 |
| 2021 | 10 |
| 2022 | 17 |
| 2023 | 44 |
| 2024 | 82 |
| 2025 | 97 |
| 2026 | 21 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing slit separator and method for producing separator roll
US-10513045-B2 · Dec 24, 2019 · US
Apparatus and method of supplying fuel cell stack material
US-10497951-B2 · Dec 3, 2019 · US
Method for producing film and method for winding off film
US-10427904-B2 · Oct 1, 2019 · US
Leveling apparatus for preventing curling of pouch-type secondary battery
US-2019207172-A1 · Jul 4, 2019 · US
Method for producing separator and method for slitting separator original sheet
US-10307925-B2 · Jun 4, 2019 · US
Film winding device control method, film roll, film winding device, and film roll production method
US-10301135-B2 · May 28, 2019 · US
Film inspection device
US-10197503-B2 · Feb 5, 2019 · US
Multilayer adhesive bonding element
US-10183476-B2 · Jan 22, 2019 · US
Device for separating at least two adjacent strands of material and system including such a device
US-10147559-B2 · Dec 4, 2018 · US
Method for producing separator roll and device for producing separator roll
US-2018311849-A1 · Nov 1, 2018 · US
Slitting apparatus and method for producing separator roll
US-10105861-B2 · Oct 23, 2018 · US
Cutting apparatus and rotary blade
US-2018282105-A1 · Oct 4, 2018 · US
Inspection device, inspection method, and method of producing film roll
US-2018284037-A1 · Oct 4, 2018 · US
Taping machine for attaching insulation tape to outer peripheral sealing part of battery cell
US-2018215490-A1 · Aug 2, 2018 · US
Method of bonding strip-shaped members to each other and apparatus configured to bond strip-shaped members to each other
US-2018215567-A1 · Aug 2, 2018 · US
Device and method for producing separator roll
US-10035278-B2 · Jul 31, 2018 · US
Winding device and method for designing winding device
US-10017348-B2 · Jul 10, 2018 · US
Fabricating apparatus and method for secondary battery
US-10008734-B2 · Jun 26, 2018 · US
Sheet material conveying device
US-2018170702-A1 · Jun 21, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B65H2801/72?
- CPC B65H2801/72 is the Cooperative Patent Classification code for “Fuel cell manufacture.”
- How many patents are filed under CPC B65H2801/72 (Fuel cell manufacture)?
- Our database includes 347 publications tagged with this CPC code.
- Is patent activity under CPC B65H2801/72 growing?
- Publication counts under this code: 82 in 2024 vs 97 in 2025 (latest complete years).