Production device for melt-blown non-woven fabric
US-12559872-B2 · Feb 24, 2026 · US
having reverse-feeding elements
having reverse-feeding elements · 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 | B29C48/55 |
| Official title | having reverse-feeding elements |
| Display label | having reverse-feeding elements |
| Total patents | 56 |
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 | 8 |
| 2017 | 9 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 9 |
| 2023 | 8 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Production method for heat-resistant resin composition
US-12427704-B2 · Sep 30, 2025 · US
Extruder
US-12304111-B2 · May 20, 2025 · US
Production device for melt-blown non-woven fabric
US-2023392308-A1 · Dec 7, 2023 · US
Recycling apparatus for a cross-linked polyethylene resin using twin screw extruder
US-11826927-B2 · Nov 28, 2023 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11813785-B2 · Nov 14, 2023 · US
Production method for low molecular weight polymer, and production device and production method for melt-blown non-woven fabric
US-11781254-B2 · Oct 10, 2023 · US
Production method for heat-resistant resin composition
US-2023311394-A1 · Oct 5, 2023 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11752682-B2 · Sep 12, 2023 · US
Process for removing volatile components from an olefin polymer and article obtained
US-11648722-B2 · May 16, 2023 · US
Production method for conductive composite material
US-11584830-B2 · Feb 21, 2023 · US
Recycling apparatus for a cross-linked polyethylene resin using twin screw extruder
US-2022339820-A1 · Oct 27, 2022 · US
Production method for low molecular weight polymer, and production device and production method for melt-blown non-woven fabric
US-2022325455-A1 · Oct 13, 2022 · US
Extruder screw with conveying portions and barrier portions and extrusion methods using the extruder screw and a plurality of barrel blocks
US-11400632-B2 · Aug 2, 2022 · US
Extruder screw passages, extruder and extrusion method
US-11400633-B2 · Aug 2, 2022 · US
Extruder
US-2022126481-A1 · Apr 28, 2022 · US
Twin screw extruder
US-11312056-B2 · Apr 26, 2022 · US
Vacuum-assisted co-extrusion of flexible fibres and the moldable thermoplastic composites produced
US-11306206-B2 · Apr 19, 2022 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11224991-B2 · Jan 18, 2022 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11220022-B2 · Jan 11, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/55?
- CPC B29C48/55 is the Cooperative Patent Classification code for “having reverse-feeding elements.”
- How many patents are filed under CPC B29C48/55 (having reverse-feeding elements)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/55 growing?
- Publication counts under this code: 8 in 2023 vs 2 in 2025 (latest complete years).