Polyurethane based roadway forming
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 2018
Issued Date -
N/A
app pub date -
Nov 6, 2015
filing date -
Feb 20, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided herein are roadways containing polyurethane materials. A roadway includes a base layer of a compacted in situ material and/or a wear layer disposed on the base layer. One or both of these layers may include the polyurethane material to bind other components in the layers and to form more robust and durable roadway structures capable of withstanding operating loads of the roadway. In some embodiments, the polyurethane material is added to the wear layer by mixing in situ soil and/or foreign aggregate with polyurethane material or by dispensing the polyurethane material over the existing partially formed wear layer. The base layer may or may not include a polyurethane material. The type, concentration, distribution, and processing of the polyurethane material in the wear layer may be the same or different than that in the base layer.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- E01C Class
- 372 Applications Filed
- 309 Patents Issued To-Date
- 83.07 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E01C Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 1, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 1, 2029 |
