NON-WELDING TYPE CONCRETE-FILLED STEEL TUBE COLUMN HAVING SLOT AND METHOD FOR FABRICATING THE SAME
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 30, 2013
app pub date -
Sep 14, 2012
filing date -
Nov 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A non-welding type concrete-filled steel tube column utilizing a slot, in which an external steel tube is bended and retracted to allow a jointing portion thereof to be formed as a T-shaped bending part is provided. A slot is inserted into the T-shaped bending part in a sliding manner to construct in a non-welding manner, and a multi-perforated penetrating part can be formed on the external steel tube to secure fire resistance capacity thereof. A method of fabricating the same is also provided.
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 | |
---|---|---|
KOREA INSTITUTE OF CONSTRUCTION TECHNOLOGY | GOYANG-SI GYEONGGI-DO 411-712 |
International Classification(s)

- 2012 Application Filing Year
- E04C Class
- 413 Applications Filed
- 294 Patents Issued To-Date
- 71.19 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
AHN, CHAN-SOL | Gyeonggi-do, KR | 1 | 6 |
# of filed Patents : 1 Total Citations : 6 | |||
KIM, HEUNG-YOUL | Seoul, KR | 5 | 15 |
# of filed Patents : 5 Total Citations : 15 | |||
KIM, HYUNG-JUN | Gyeonggi-do, KR | 62 | 378 |
# of filed Patents : 62 Total Citations : 378 | |||
YEO, IN-HWAN | Seoul, KR | 3 | 9 |
# of filed Patents : 3 Total Citations : 9 |
Cited Art Landscape
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Patent Citation Ranking
- 6 Citation Count
- E04C Class
- 3.96 % this patent is cited more than
- 12 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 30, 2024 |
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 |
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