Device for transporting sheets in a folding machine, and folding machine
US-2025361114-A1 · Nov 27, 2025 · US
Feeding sheets or blanks
Feeding sheets or blanks · 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 | B31B50/04 |
| Official title | Feeding sheets or blanks |
| Display label | Feeding sheets or blanks |
| Total patents | 64 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 12 |
| 2022 | 4 |
| 2023 | 13 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method And System For Forming Articles
US-2025256477-A1 · Aug 14, 2025 · US
Defect detecting device and defect detecting method for corrugated cardboard sheet, and box making machinery
US-2025135741-A1 · May 1, 2025 · US
Methods and systems for forming trays
US-12172405-B2 · Dec 24, 2024 · US
Converting machine
US-12053949-B2 · Aug 6, 2024 · US
End flap engagement assembly for erecting cartons and related systems and methods
US-2024190100-A1 · Jun 13, 2024 · US
Skip slot box blanks, boxes and methods of forming the same
US-2024101302-A1 · Mar 28, 2024 · US
Converting machine
US-2024059041-A1 · Feb 22, 2024 · US
A system and a method for assembling a packaging
US-2023405958-A1 · Dec 21, 2023 · US
Box forming machine
US-2023373182-A1 · Nov 23, 2023 · US
Printing unit, printing device, box making machine
US-11766843-B2 · Sep 26, 2023 · US
Box forming machine
US-11752724-B2 · Sep 12, 2023 · US
Converting machine
US-11731385-B2 · Aug 22, 2023 · US
Mandrel-forming containers with radio frequency identification (rfid)
US-2023196054-A1 · Jun 22, 2023 · US
Methods And Systems For Forming Trays
US-2023166474-A1 · Jun 1, 2023 · US
Air vent for welded portion in plastic corrugated material, and process for forming welded portion
US-11643242-B2 · May 9, 2023 · US
Box erecting method and system
US-11642864-B2 · May 9, 2023 · US
Container forming machine having a blank stacker assembly
US-11623422-B2 · Apr 11, 2023 · US
Methods and machine for forming a shipping container with an article retaining web
US-11607858-B2 · Mar 21, 2023 · US
Slitter device, slitter-head positioning method, and box making machine
US-2023073751-A1 · Mar 9, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B31B50/04?
- CPC B31B50/04 is the Cooperative Patent Classification code for “Feeding sheets or blanks.”
- How many patents are filed under CPC B31B50/04 (Feeding sheets or blanks)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC B31B50/04 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).