Patents
US 11746465 B2: Process for forming a synthetic leather
- Granted
- 2023-09-05
- Filed
- 2018-08-21 application 17267958
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A process of making a synthetic leather includes (i) first, contacting a textile with an aqueous solution containing a cationic hydroxyethylcellulose polymer to form a modified textile component; (ii) subsequently, impregnating the modified textile component with an aqueous polyurethane dispersion externally stabilized with an anionic surfactant; and (iii) precipitating the polyurethane in the modified textile component. And a synthetic leather formed by the process.
Source: PVGPATDIS, file of 2026-04-10 (ipg230905.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| THE DOW CHEMICAL COMPANY 17 patents | US company or organization | Midland, MI | THE DOW CHEMICAL COMPANY Federal lobbying client EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Xiangyang Tai | Shanghai, CN | 15 | PVGPATDIS, file of 2026-04-10 | |
| Zhaohui Qu | Shanghai, CN | 23 | PVGPATDIS, file of 2026-04-10 | |
| Ruijun ZHAO | Shanghai, CN | 1 | PVGPATDIS, file of 2026-04-10 | |
| Yunlong Guo | Shanghai, CN | 13 | PVGPATDIS, file of 2026-04-10 | |
| Xiaoyi Pang | Shanghai, CN | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| D06N | Wall, floor, or like covering materials, e.g. linoleum, oilcloth, artificial leather, roofing felt, consisting of a fibrous web coated with a layer of macromolecular material; flexible sheet material not otherwise provided for | D06N3/02 | PVGPATDIS, file of 2026-04-10 |
| D06M | Treatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials | D06M15/09 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-07-13 | Assignment Assignment of assignor's interest | THE DOW CHEMICAL COMPANY signed 2019-07-10 | DOW GLOBAL TECHNOLOGIES LLC MIDLAND, MI | 64247/204 | ECORSEXC, file of 2026-09-25 |
| 2023-07-13 | Assignment Assignment of assignor's interest | DOW CHEMICAL (CHINA) INVESTMENT COMPANY LIMITED signed 2019-07-10 | THE DOW CHEMICAL COMPANY MIDLAND, MI | 64247/119 | ECORSEXC, file of 2026-09-25 |
| 2023-07-13 | Assignment Assignment of assignor's interest | GUO, YUNLONG signed 2019-07-02 PANG, XIAOYI signed 2019-07-02 TAI, XIANGYANG signed 2019-07-02 | DOW CHEMICAL (CHINA) INVESTMENT COMPANY LIMITED SHANGHAI | 64247/41 | ECORSEXC, file of 2026-09-25 |
| 2023-07-13 | Assignment Assignment of assignor's interest | QU, ZHAOHUI signed 2019-07-02 ZHAO, RUIJUN signed 2019-07-02 | ROHM AND HAAS COMPANY COLLEGEVILLE, PA | 64246/914 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.