Thin metal strip winding method and thin metal strip winding system
US-2025304392-A1 · Oct 2, 2025 · US
Drums or other coil-holders
Drums or other coil-holders · 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 | B21C47/28 |
| Official title | Drums or other coil-holders |
| Display label | Drums or other coil-holders |
| Total patents | 29 |
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 | 3 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thin metal strip winding method and thin metal strip winding system
US-2025304391-A1 · Oct 2, 2025 · US
Automated systems and methods for post-tension tendon manufacture and coiling
US-2025229348-A1 · Jul 17, 2025 · US
Coil skid and steel sheet manufacturing method
US-12280412-B2 · Apr 22, 2025 · US
Automated systems and methods for post-tension tendon manufacture and coiling
US-2023249267-A1 · Aug 10, 2023 · US
Manufacturing apparatus and manufacturing method of hot-rolled coil
US-11697144-B2 · Jul 11, 2023 · US
Flange stand and adapter for flanges
US-11572248-B2 · Feb 7, 2023 · US
Coil skid and steel sheet manufacturing method
US-2022347732-A1 · Nov 3, 2022 · US
Manufacturing apparatus and manufacturing method of hot-rolled coil
US-2022152679-A1 · May 19, 2022 · US
Independently rotatable flanges and attachable arbor hole adapters
US-11124382-B2 · Sep 21, 2021 · US
Winding wire manufacturing device and control method for the same
US-11007560-B2 · May 18, 2021 · US
Flange stand and adapter for flanges
US-2021107763-A1 · Apr 15, 2021 · US
Flange stand and adapter for flanges
US-10766735-B2 · Sep 8, 2020 · US
Independently rotatable flanges and attachable arbor hole adapters
US-2019193984-A1 · Jun 27, 2019 · US
Winding wire manufacturing device and control method for the same
US-2019118236-A1 · Apr 25, 2019 · US
Independently rotatable flanges and attachable arbor hole adapters
US-10221036-B2 · Mar 5, 2019 · US
Flange stand and adapter for flanges
US-2018029825-A1 · Feb 1, 2018 · US
Continuous rod transport system
US-9873366-B2 · Jan 23, 2018 · US
Reel for winding metal strip
US-9873144-B2 · Jan 23, 2018 · US
Independently rotatable flanges and attachable arbor hole adapters
US-9828209-B2 · Nov 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21C47/28?
- CPC B21C47/28 is the Cooperative Patent Classification code for “Drums or other coil-holders.”
- How many patents are filed under CPC B21C47/28 (Drums or other coil-holders)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC B21C47/28 growing?
- Publication counts under this code: 3 in 2023 vs 4 in 2025 (latest complete years).