Flocculation basin inclusion or exclusion type water treatment apparatus using dissolved air flotation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 12, 2017
Issued Date -
N/A
app pub date -
Apr 6, 2015
filing date -
Apr 7, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed herein is a flocculation basin inclusion ion type water treatment apparatus using dissolved air floatation which includes: a flocculation basin which forms flocs by mixing a coagulant inserted into feed water and grows up the flocs; a contact zone to which fine bubbles are induced through a nozzle disposed at a lower part; and a separation zone which removes the flocs when the fine bubbles are attached to the flocs and the flocs float on the surface of water, the flocculation basin inclusion type water treatment apparatus including: a fine bubble forming part configured to separate a portion of the feed water at an upstream side of the flocculation basin by piping, configured to form saturated water using the separated portion of the feed water and configured to supply the saturated water to the nozzle.
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 | |
---|---|---|
DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO LTD | GYEONGSANGNAM-DO 51711 |
International Classification(s)

- 2015 Application Filing Year
- B03D Class
- 80 Applications Filed
- 64 Patents Issued To-Date
- 80 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Park, Byung Sung | Incheon, KR | 8 | 11 |
# of filed Patents : 8 Total Citations : 11 | |||
Park, Sung Won | Goyang-si, KR | 68 | 306 |
# of filed Patents : 68 Total Citations : 306 |
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Patent Citation Ranking
- 1 Citation Count
- B03D Class
- 28.57 % this patent is cited more than
- 8 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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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 12, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 12, 2029 |
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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Date | Code | Event | Description |
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Jun 16, 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 |
Jan 02, 2018 | I | Issuance | |
Dec 13, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 31, 2015 | P | Published | |
Jul 17, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLANGERO, MAXIME;KIM, KYUBO;CHOI, DA-IN;REEL/FRAME:036517/0400 Owner name: UMICORE, BELGIUM Effective Date: Jul 17, 2015 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLANGERO, MAXIME;KIM, KYUBO;CHOI, DA-IN;REEL/FRAME:036517/0400 Owner name: UMICORE KOREA LTD., KOREA, REPUBLIC OF Effective Date: Jul 17, 2015 |
Nov 12, 2013 | F | Filing |

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