Passive emergency hydrogen mitigation system for water-cooled nuclear reactors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 14, 1998
Issued Date -
N/A
app pub date -
May 15, 1997
filing date -
Oct 31, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved system for passively removing hydrogen inside containment in a nuclear reactor in the event of a loss of coolant accident by means of catalytic hydrogen recombination. A baffle wall located inside containment is used to establish within containment an air upflow path and an air downflow path in convective exchange. The air upflow is past the area of the coolant lines and is effective to entrain hydrogen from the break and the air downflow path is in the area adjacent the containment wall. The air upflow path downstream of the coolant lines is ducted so as to confine the entrained hydrogen to the ducted air upflow path and catalytic hydrogen recombiners are located in the ducted air upflow path for recombining said entrained hydrogen with oxygen in said ducted air upflow.
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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ATOMIC ENERGY OF CANADA LIMITED | CHALK RIVER LABORATORIES CHALK RIVER K0J1J0 |
International Classification(s)

- 1997 Application Filing Year
- G21C Class
- 154 Applications Filed
- 93 Patents Issued To-Date
- 60.39 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Spinks, Norman J | Deep River, CA | 5 | 91 |
# of filed Patents : 5 Total Citations : 91 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 5 Citation Count
- G21C Class
- 7.75 % this patent is cited more than
- 27 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

Legal Events
Date | Code | Event | Description |
---|---|---|---|
May 17, 2006 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Apr 14, 2006 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Apr 14, 2006 |
Apr 14, 2006 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Nov 02, 2005 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jun 03, 2003 | CC | CERTIFICATE OF CORRECTION | |
Aug 14, 2001 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jun 16, 1998 | CC | CERTIFICATE OF CORRECTION | |
Apr 14, 1998 | I | Issuance | |
May 15, 1997 | F | Filing | |
Oct 31, 1995 | PD | Priority Date |

Matter Detail

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