Integral polyethylene terephthalate grids, the method of manufacture, and uses thereof
USRE49523E1 · kind E1 · reissue
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8References
36Claims
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Key dates
| Filing date | Jan 26, 2018 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Jan 26, 2038 |
Classification
- Technology area (CPC —)General
Abstract
An integral polymer grid with a plurality of interconnected, oriented polyethylene terephthalate strands and an array of openings therein is made from a polyethylene terephthalate sheet-like starting material having holes or depressions therein that form the openings when the sheet-like material is uniaxially or biaxially stretched. The grid has a higher tensile strength to weight ratio and a higher creep reduced strength to weight ratio than corresponding ratios associated with a grid made from a non-polyethylene terephthalate starting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.