Environmental porous overlayer and process of making the same
US5906454A · kind A · utility
22Cited by
24References
13Claims
0Family size
Inventors
Key dates
| Filing date | Feb 12, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Feb 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A solid state porous rubber overlayment friction course is formed from recycled rubber, plastic and/or other products, and facilitates drainage of standing water from the road surface. The overlayment may have holes running through its surface to expedite water drainage, and also may have grooves on its undersurface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.