Shoe sole
US6726985B2 · kind B2 · utility
2Cited by
24References
20Claims
0Family size
Inventors
Key dates
| Filing date | Nov 2, 2001 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/608
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a shoe sole that includes a polyamide in the form of powder or microfibers admixed with a thermoplastic base material to improve the strength, durability, abrasion resistance, and other desirable physical properties of the shoe sole. Suitable thermoplastic base materials include rubber, polyurethane or ethylene vinyl acetate. The polyamide microfibers are randomly and nonuniformly oriented to reinforce the shoe sole in all directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.