Melt spinning apparatus for extruding a first melt and a second melt
US-2025305185-A1 · Oct 2, 2025 · US
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Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B)
Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B) · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D01D4/04 |
| Official title | Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B) |
| Display label | Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B) |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 3 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Control method for yarn route inspection equipment, electronic device and storage medium
US-12110614-B1 · Oct 8, 2024 · US
Control method for yarn route inspection equipment, electronic device and storage medium
US-11993868-B1 · May 28, 2024 · US
Method and device for cleaning spinnerets while producing cellulose spunbonded nonwoven fabric
US-11873581-B2 · Jan 16, 2024 · US
Electrospinning head, electrospinning apparatus, and cleaning method of electrospinning head
US-11655562-B2 · May 23, 2023 · US
Electrospinning apparatus
US-11618974-B2 · Apr 4, 2023 · US
Method and device for cleaning spinnerets while producing cellulose spunbonded nonwoven fabric
US-2022316096-A1 · Oct 6, 2022 · US
Passive intermittent rotating assembly and electrospinning equipment
US-11427935-B2 · Aug 30, 2022 · US
Passive intermittent rotating assembly and electrospinning equipment
US-2022170180-A1 · Jun 2, 2022 · US
Electrospinning head, electrospinning apparatus, and cleaning method of electrospinning head
US-2022106710-A1 · Apr 7, 2022 · US
Electrospinning apparatus
US-2022106709-A1 · Apr 7, 2022 · US
Fiber manufacturing apparatus and fiber manufacturing method
US-11105017-B2 · Aug 31, 2021 · US
Electrospinning apparatus
US-10920341-B2 · Feb 16, 2021 · US
Cleaning device and electrospinning apparatus
US-10882079-B2 · Jan 5, 2021 · US
Nozzle head and electrospinning apparatus
US-10745826-B2 · Aug 18, 2020 · US
Cleaning device and electrospinning apparatus
US-2018250718-A1 · Sep 6, 2018 · US
Electrospinning apparatus
US-2018202074-A1 · Jul 19, 2018 · US
Fiber manufacturing apparatus and fiber manufacturing method
US-2018202073-A1 · Jul 19, 2018 · US
Nozzle head and electrospinning apparatus
US-2017268129-A1 · Sep 21, 2017 · US