Synthetic leather
US-2024026603-A1 · Jan 25, 2024 · US
two or more layers of polyurethanes
two or more layers of polyurethanes · 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 | D06N3/145 |
| Official title | {two or more layers of polyurethanes} |
| Display label | two or more layers of polyurethanes |
| Total patents | 116 |
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 | 2 |
| 2017 | 4 |
| 2018 | 9 |
| 2019 | 2 |
| 2020 | 14 |
| 2021 | 19 |
| 2022 | 18 |
| 2023 | 17 |
| 2024 | 14 |
| 2025 | 15 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Synthetic leather
US-11505896-B2 · Nov 22, 2022 · US
Synthetic leather
US-11479908-B2 · Oct 25, 2022 · US
Synthetic leather
US-11479911-B2 · Oct 25, 2022 · US
Curable composition and synthetic leather
US-2022332883-A1 · Oct 20, 2022 · US
Synthetic leather
US-2022220667-A1 · Jul 14, 2022 · US
Grain-finished leather-like sheet and evaluation method for grain-finished leather-like sheet
US-2022186430-A1 · Jun 16, 2022 · US
Waterborne polyurethane dispersion and method for preparing the same
US-2022154038-A1 · May 19, 2022 · US
Synthetic leather article and method for preparing same
US-2021388559-A1 · Dec 16, 2021 · US
Synthetic leather article and method for preparing the same
US-2021348328-A1 · Nov 11, 2021 · US
Touch display leather and leather structure
US-2021332528-A1 · Oct 28, 2021 · US
Artificial leather for automotive interior materials and method of manufacturing the same
US-2021310187-A1 · Oct 7, 2021 · US
Grained leather-like sheet
US-2021285152-A1 · Sep 16, 2021 · US
Artificial leather and method for producing the same
US-2021262161-A1 · Aug 26, 2021 · US
Synthetic leather
US-2021230798-A1 · Jul 29, 2021 · US
Synthetic leather
US-2021230797-A1 · Jul 29, 2021 · US
Synthetic leather
US-2021230800-A1 · Jul 29, 2021 · US
Synthetic leather
US-2021230799-A1 · Jul 29, 2021 · US
Artificial leather for automotive interior materials and method of manufacturing the same
US-2021222361-A1 · Jul 22, 2021 · US
Artificial leather and manufacturing method thereof
US-2021222360-A1 · Jul 22, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D06N3/145?
- CPC D06N3/145 is the Cooperative Patent Classification code for “two or more layers of polyurethanes.”
- How many patents are filed under CPC D06N3/145 (two or more layers of polyurethanes)?
- Our database includes 116 publications tagged with this CPC code.
- Is patent activity under CPC D06N3/145 growing?
- Publication counts under this code: 14 in 2024 vs 15 in 2025 (latest complete years).