In-well air stripping, oxidation, and adsorption
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 4, 2001
Issued Date -
N/A
app pub date -
May 8, 2000
filing date -
May 19, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and system for removing contaminants for the phreatic zone, also known as the saturation zone, or groundwater. The technique involves gas sparging and oxidation while increasing the surface area for mass transfer by the placing of packing balls into the eductor tube. The system is comprised of a means for supplying gas/ozone mixture to the lower extent of a well which induces a flow of groundwater and gas bubbles up the well. The system contains a conduit within the well, which extends below the water table The conduit has a lower fluid-permeable section which is located below the water table and an upper fluid-permeable section which is adjacent the water table.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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ARCADIS GERAGHTY & MILLER | DENVER CO |
International Classification(s)

- 2000 Application Filing Year
- A62D Class
- 91 Applications Filed
- 25 Patents Issued To-Date
- 27.48 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Suthersan, Suthan S | Yardley, PA | 19 | 293 |
# of filed Patents : 19 Total Citations : 293 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 28 Citation Count
- A62D Class
- 85.71 % this patent is cited more than
- 24 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Dec 07, 2020 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Jan 23, 2018 | I | Issuance | |
Jan 03, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Mar 03, 2016 | P | Published | |
Jul 17, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TOMITA, SHO;KUROKI, RENTARO;REEL/FRAME:036947/0506 Owner name: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN Effective Date: Jul 17, 2015 |
May 08, 2013 | F | Filing |

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