Arrangement in recovery boiler
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 15, 2009
Grant Date -
Dec 28, 2006
app pub date -
May 23, 2006
filing date -
Jun 2, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to an arrangement in a recovery boiler into which spent liquor to be incinerated and combustion air are supplied, the arrangement comprising superheaters (4a-4d) in the upper part of the recovery boiler for recovering heat, at least one boiler bank (11) located in a flue gas duct part (10a) known as the second pass, immediately after the recovery boiler, and at least one economizer (12a-12b) in a duct part after the second pass in the recovery boiler flue gas duct (10). The invention comprises an economizer (21) located parallel with the boiler bank (11) in the second pass.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- KVAERNER POWER OY
International Classification(s)

- 2006 Application Filing Year
- F22B Class
- 73 Applications Filed
- 40 Patents Issued To-Date
- 54.80 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Haaga, Kari | Tampere , FI | 7 | 29 |
# of filed Patents : 7 Total Citations : 29 | |||
Hakulinen, Aki | Tampere , FI | 4 | 31 |
# of filed Patents : 4 Total Citations : 31 | |||
Raukola, Antti | Kangasala , FI | 5 | 27 |
# of filed Patents : 5 Total Citations : 27 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 4 Citation Count
- F22B Class
- 10.45 % this patent is cited more than
- 16 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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Jan 23, 2018 | I | Issuance | |
Jan 03, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 31, 2015 | P | Published | |
Oct 14, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MICROSOFT CORPORATION;REEL/FRAME:034747/0417 Owner name: MICROSOFT TECHNOLOGY LICENSING, LLC, WASHINGTON Effective Date: Oct 14, 2014 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MICROSOFT CORPORATION;REEL/FRAME:039025/0454 Owner name: MICROSOFT TECHNOLOGY LICENSING, LLC, WASHINGTON Effective Date: Oct 14, 2014 |
Jul 02, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MARRON, MARK;BARR, EARL THEODORE;SIGNING DATES FROM 20140627 TO 20140701;REEL/FRAME:033227/0378 Owner name: MICROSOFT CORPORATION, WASHINGTON |
Jun 30, 2014 | F | Filing | |
Jun 30, 2014 | PD | Priority Date |

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