Feed spacer for reducing differential pressure of reverse osmosis element, and formation nozzle
US-12434193-B2 · Oct 7, 2025 · US
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Spinnerettes containing inserts
Spinnerettes containing inserts · 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 | D01D4/027 |
| Official title | {Spinnerettes containing inserts} |
| Display label | Spinnerettes containing inserts |
| Total patents | 11 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Producing fibers using spinnerets
US-11674241-B2 · Jun 13, 2023 · US
Polymer coextrusion head with a dual-channel nozzle
US-11541585-B2 · Jan 3, 2023 · US
Feed spacer for reducing differential pressure of reverse osmosis element, and formation nozzle
US-2022193610-A1 · Jun 23, 2022 · US
Producing Fibers Using Spinnerets
US-2021047754-A1 · Feb 18, 2021 · US
Producing fibers using spinnerets
US-10889915-B2 · Jan 12, 2021 · US
Polymer coextrusion head with a dual-channel nozzle
US-2020340142-A1 · Oct 29, 2020 · US
Variable-diameter spinning nozzle and processing devices for hollow fiber membrane bundle and membrane module
US-2020070100-A1 · Mar 5, 2020 · US
Producing Fibers Using Spinnerets
US-2019233971-A1 · Aug 1, 2019 · US
Producing Fibers Using Spinnerets
US-2019233972-A1 · Aug 1, 2019 · US
Method of producing a filament comprising a silica gel-fiber
US-10081884-B2 · Sep 25, 2018 · US