Combustion system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 5, 2019
Grant Date -
Jul 17, 2014
app pub date -
May 4, 2012
filing date -
May 4, 2011
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
This invention relates to a combustion system. The combustion system includes a fireplace which has a fire base, a primary combustion zone for pyrolysising and/or combusting a biomass fuel, and a secondary combustion zone for combusting gases and/or particulate matter produced from the pyrolysis and/or combustion of the biomass fuel. The combustion system also includes an exhaust flue, the exhaust flue extending to a position near to, or adjacent, the secondary combustion zone and/or the fire base. The invention may be particularly suitable for use in relation to wood burners, either by retrofitting to existing wood burners or by incorporating into new wood burners.
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 | |
---|---|---|
STEWART JASON JOREN JENS | WARKWORTH 0983 |
International Classification(s)

- 2012 Application Filing Year
- F23G Class
- 90 Applications Filed
- 75 Patents Issued To-Date
- 83.34 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Stewart, Jason Joren Jens | Warkworth, NZ | 2 | 3 |
# of filed Patents : 2 Total Citations : 3 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- F23G Class
- 66.67 % 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 5, 2026 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 5, 2030 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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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