CONTAINMENT CASK FOR DRUM CONTAINING RADIOACTIVE HAZARDOUS WASTE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Feb 28, 2019
app pub date -
Aug 30, 2018
filing date -
Aug 31, 2017
priority date (Note) -
Published
status (Latency Note)
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Importance

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Abstract
A containment cask for safely transporting and storing radioactive hazardous waste in a dry air environment. The cask comprises a single drum containing the radioactive hazardous waste, a sealed and shielded containment vessel containing the drum, and an outer container. The outer container can be in the form of an outer shield vessel (OSV) made from iron to provide further shielding. This outer container is appropriate for a drum having higher activity waste. The outer container can also be in the form of an overpack assembly that adds protection for atmospheric hazards, but adds little in terms of shielding. This outer container is appropriate for a drum having lower activity waste.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NAC INTERNATIONAL INC | 3930 E JONES BRIDGE ROAD NORCROSS GA 30092 |
International Classification(s)

- 2018 Application Filing Year
- G21F Class
- 173 Applications Filed
- 116 Patents Issued To-Date
- 67.06 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Langston, Andrew K | Wilmington, US | 9 | 50 |
# of filed Patents : 9 Total Citations : 50 | |||
Sisley, Steve E | Peachtree Corners, US | 3 | 7 |
# of filed Patents : 3 Total Citations : 7 | |||
Subiry, Juan C | Atlanta, US | 6 | 65 |
# of filed Patents : 6 Total Citations : 65 |
Cited Art Landscape
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Patent Citation Ranking
- 7 Citation Count
- G21F Class
- 58 % this patent is cited more than
- 6 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 28, 2026 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 28, 2030 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 |
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