Durable pilling resistant nonwoven insulation
US-2024229313-A9 · Jul 11, 2024 · US
Olefin series
Olefin series · 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 | D04H1/4291 |
| Official title | Olefin series |
| Display label | Olefin series |
| Total patents | 543 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 30 |
| 2017 | 49 |
| 2018 | 36 |
| 2019 | 36 |
| 2020 | 54 |
| 2021 | 37 |
| 2022 | 59 |
| 2023 | 72 |
| 2024 | 69 |
| 2025 | 48 |
| 2026 | 22 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of making a nonwoven fiber web, nonwoven fiber web, and multi-component fiber
US-12000071-B2 · Jun 4, 2024 · US
Hydrophilic electret media
US-2016369451-A1 · Dec 22, 2016 · US
Gel Wipe Composition Comprising a Superabsorbent Gel Fiber
US-2016367102-A1 · Dec 22, 2016 · US
Elastic nonwoven fabric, process for producing the same, and textile product comprising the elastic nonwoven fabric
US-9523161-B2 · Dec 20, 2016 · US
Methods for forming absorbent articles with nonwoven substrates
US-9504610-B2 · Nov 29, 2016 · US
Dimensionally stable nonwoven fibrous webs and methods of making and using the same
US-9487893-B2 · Nov 8, 2016 · US
A Process for Making a Hydrophilic Nonwoven Structure, a Nonwoven Structure Produced Thereby and an Article Containing the Nonwoven Structure
US-2016317696-A1 · Nov 3, 2016 · US
Fibrous laminate containing ultrafine fibers and filter comprising same
US-2016288034-A1 · Oct 6, 2016 · US
Soft and Durable Nonwoven Composite
US-2016251788-A1 · Sep 1, 2016 · US
Process of making dimensionally stable nonwoven fibrous webs
US-9416485-B2 · Aug 16, 2016 · US
Wiring harness protection member and wiring harness
US-9362726-B2 · Jun 7, 2016 · US
Fibers of polymer-wax compositions
US-9328440-B2 · May 3, 2016 · US
Core material for vacuum insulator, comprising organic synthetic fiber, and vacuum insulator containing same
US-2016118158-A1 · Apr 28, 2016 · US
Absorbent Article Containing a Nonwoven Web Formed from a Porous Polyolefin Fibers
US-2016101208-A1 · Apr 14, 2016 · US
Process to produce soft polypropylene-based nonwovens
US-9303158-B2 · Apr 5, 2016 · US
Fibers and Nonwoven Materials Prepared Therefrom
US-2016082690-A1 · Mar 24, 2016 · US
Absorbent articles with nonwoven substrates having fibrils
US-2016081861-A1 · Mar 24, 2016 · US
Mixed fiber nonwoven fabric and a production method therefor (as amended)
US-2016074790-A1 · Mar 17, 2016 · US
Fibers and Nonwoven Materials Prepared Therefrom
US-2016076171-A1 · Mar 17, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D04H1/4291?
- CPC D04H1/4291 is the Cooperative Patent Classification code for “Olefin series.”
- How many patents are filed under CPC D04H1/4291 (Olefin series)?
- Our database includes 543 publications tagged with this CPC code.
- Is patent activity under CPC D04H1/4291 growing?
- Publication counts under this code: 69 in 2024 vs 48 in 2025 (latest complete years).