FURNACE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
May 30, 2024
app pub date -
Feb 6, 2024
filing date -
Aug 25, 2016
priority date (Note) -
Published
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
A furnace including a combustion chamber for burning fuel can have increased fuel burning efficiency, increased heating efficiency, and decreased harmful emissions of combustion byproducts. A combustion air delivery system delivers primary and secondary combustion air to the combustion chamber. Primary and secondary combustion air may be delivered at amounts that increase burning efficiency. An amount of secondary combustion air can be controlled by a valve system. A heat transfer device efficiently transfers heat from products of combustion for heating an enclosed space.
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 | |
---|---|---|
FIRE CHIEF IND LLC | Not Provided |
International Classification(s)

- 2024 Application Filing Year
- F24H Class
- 171 Applications Filed
- 6 Patents Issued To-Date
- 3.51 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Haynes, Danny N | Byrnes Mill, US | 4 | 6 |
# of filed Patents : 4 Total Citations : 6 | |||
Miller, Gregory A | Chesterfield, US | 30 | 1713 |
# of filed Patents : 30 Total Citations : 1713 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- F24H Class
- 0 % this patent is cited more than
- 1 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 30, 2027 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 30, 2031 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 30, 2035 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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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