Road restraint system parts
US7399138B2 · kind B2 · utility
1Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2001 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | May 22, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A road restraint system part is made of polyolefin material having an energy absorption of at least 10 kJ/m2 at +23° C. and at least 5 kJ/m2 at −20° C. (determined according to ISO 179/1eA with notched specimens).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.