Boiler and method for controlling air and fuel ratio using air pressure sensor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 21, 2011
Grant Date -
Dec 17, 2009
app pub date -
Sep 14, 2005
filing date -
Apr 29, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed is an air-fuel ratio control boiler using a air pressure sensor and method for controlling the air-fuel ratio thereof. The boiler is comprised of a fan, the air pressure sensor, a air pressure sensor voltage measurement unit, a air pressure sensor voltage compensation unit, and a controller, and previously compensates for noise factors caused by deviation (error) of a component property, a constituent, of the air pressure sensor so as to be matched to initial reference voltage prior to operating the fan, thereby maximizing the effectiveness of the air-fuel ratio. Further, the boiler makes it possible not only to exert an optimal fuel efficiency effect due to the maximization of combustion efficiency, but also to minimize discharge of harmful gases, thereby preventing environmental pollution in advance, and thus improving the reliability of products.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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KYUNGDONG ONE CORPORATION | SEOUL 150-729 |
International Classification(s)

- 2005 Application Filing Year
- F23L Class
- 29 Applications Filed
- 10 Patents Issued To-Date
- 34.49 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Kim, Si Hwan | Inchon, KR | 31 | 180 |
# of filed Patents : 31 Total Citations : 180 |
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Patent Citation Ranking
- 0 Citation Count
- F23L Class
- 0 % this patent is cited more than
- 14 Age
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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 |
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Nov 10, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
May 22, 2018 | I | Issuance | |
May 02, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
May 12, 2016 | P | Published | |
Jan 19, 2016 | F | Filing | |
Feb 17, 2011 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ABBOTT LABORATORIES;REEL/FRAME:037525/0537 Owner name: ABBVIE INC., ILLINOIS Effective Date: Aug 01, 2012 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HICKMAN, ROBERT K.;REEL/FRAME:037525/0457 Owner name: ABBOTT LABORATORIES, ILLINOIS Effective Date: Feb 17, 2011 |

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