Apparatus and methods for removal, measurement, and mapping of per- and polyfluoroalkyl substances
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United States of America Patent
Stats
-
Nov 1, 2022
Grant Date -
Sep 29, 2022
app pub date -
Mar 25, 2021
filing date -
Mar 25, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatus and methods for removing, measuring, and/or mapping per- and polyfluoroalkyl substances (PFAS) present in porous media such as soils, sludges, and colloids by employing both direct and indirect heating methods to transfer thermal energy to the media undergoing treatment. The contaminated media is placed within a media treatment enclosure that incorporates a thermal jacket, and radiatively heated by circulating a heated gas through the thermal jacket. The contaminated media is directly heated by injecting heated treatment gas into the media treatment enclosure. The heated treatment gas is drawn over and/or through the contaminated media to mobilize contaminants from the media and into the treatment gas, which is then collected and processed to recover the contaminant.
First Claim
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Family
International Classification(s)
- 2021 Application Filing Year
- B09C Class
- 68 Applications Filed
- 32 Patents Issued To-Date
- 47.06 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B09C Class
- 83.72 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 1, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 1, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 1, 2034 |
