Reformer tube with internal heat exchange
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 8, 2016
Grant Date -
Mar 19, 2015
app pub date -
Nov 7, 2012
filing date -
Nov 11, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A reformer tube for producing synthesis gas by steam reforming of hydrocarbon-containing feed gases, preferably natural gas, includes one or more helically coiled heat exchanger tubes which are arranged within a catalyst bed of a reforming catalyst and are helically coiled over part of their length located within the catalyst bed and are otherwise straight are present, where the straight proportion of the heat exchanger tubes and/or the helix pitch of the helically coiled part alters within the catalyst bed and matching to requirements of the pressure drop, the heat exchange properties, and the corrosion resistance.
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 | |
---|---|---|
LURGI GMBH | 60439 FRANKFURT AM MAIN | |
L' AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE | 75 QUAI D'ORSAY PARIS 75007 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Camy-Peyret, Frederic | Paris, FR | 6 | 100 |
# of filed Patents : 6 Total Citations : 100 | |||
Cances, Julien | Nantes, FR | 4 | 15 |
# of filed Patents : 4 Total Citations : 15 | |||
Coscia, Antonio | Hadamar, DE | 18 | 20 |
# of filed Patents : 18 Total Citations : 20 | |||
Mathey, Fabrice | St-remy les chevreuse, FR | 1 | 6 |
# of filed Patents : 1 Total Citations : 6 | |||
Pohl, Sven | Frankfurt am Main, DE | 5 | 13 |
# of filed Patents : 5 Total Citations : 13 | |||
Schlichting, Holger | Hofheim, DE | 12 | 43 |
# of filed Patents : 12 Total Citations : 43 | |||
Ulber, Dieter | Steinbach, DE | 23 | 55 |
# of filed Patents : 23 Total Citations : 55 | |||
Wolf, Ulrich | Egelsbach, DE | 25 | 369 |
# of filed Patents : 25 Total Citations : 369 | |||
Zolnowski, Udo | Linden, DE | 1 | 6 |
# of filed Patents : 1 Total Citations : 6 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 8, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Mar 09, 2009 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Feb 08, 2009 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Feb 08, 2009 |
Feb 08, 2009 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Aug 18, 2008 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Feb 08, 2005 | I | Issuance | |
Jun 19, 2003 | P | Published | |
Nov 20, 2002 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ANNABI, AYOUB;VINCENT, ROLAND;DIXIMUS, FREDERIC;REEL/FRAME:013764/0026 Owner name: AMPHENOL SOCAPEX, FRANCE Effective Date: Nov 20, 2002 |
Nov 14, 2002 | F | Filing | |
Nov 16, 2001 | PD | Priority Date |

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