Insole
US5733647A · kind A · utility
93Cited by
56References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1997 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | May 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A removable insole is provided which includes a layer of thermoplastic material, the thermoplastic material preferably including ethylene vinyl acetate and ethylene vinyl acetate modified by the addition of carbonyl groups. A custom-fitting insole is preferably produced by heating a substantially flat insole in a microwave oven until the thermoplastic material softens, placing the heated insole in a shoe, and having a person insert their foot into the shoe and walk around to form an impression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.