Zone freeze pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 4, 2017
Issued Date -
N/A
app pub date -
Mar 15, 2013
filing date -
Mar 28, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus sometime referred to as a freeze pipe and methods of using these apparatus in ground freezing applications is provided. Ground freezing is a temporary ground support technique that is used extensively for groundwater control and ground stabilization in underground construction and deep excavations. The process involves circulating refrigerated liquids through a series of vertically disposed “freeze” pipes to freeze the ground creating a solid barrier that prevents water intrusion and provides structural support for excavation. The freeze pipes are directed to “zone freeze” pipes or the like, which cause the ground to freeze in selected segments along the pipe, also referred to as zones.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- F24J Class
- 366 Applications Filed
- 309 Patents Issued To-Date
- 84.43 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F24J Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 4, 2028 |
