Floatation separation apparatus, method of floatation separation, and method of manufacturing products using the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 3, 2015
Grant Date -
May 10, 2012
app pub date -
Jul 15, 2010
filing date -
Jul 17, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
By storing a liquid to be treated in a treatment tank main body 10 having a bottom portion 10g that narrows downward, with particles of materials to be treated dispersed therein, taking out the liquid to be treated from a position lower than the liquid level of the treatment tank main body 10, and returning the liquid to the bottom portion 10g of the treatment tank main body 10, thereby circulating the liquid to be treated while forming a vortex flow within the treatment tank main body 10, and at the same time supplying air bubbles from the lower part of the treatment main unit 10, a first component contained in froths is separated from a second component, which is less susceptible to floatation, contained in the liquid to be treated.
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 | |
---|---|---|
THE UNIVERSITY OF KITAKYUSHU | 4-2-1 KITAGATA KOKURAMINAMI-KU KITAKYUSHU-SHI FUKUOKA 802-8577 |
International Classification(s)

- 2010 Application Filing Year
- B03D Class
- 40 Applications Filed
- 33 Patents Issued To-Date
- 82.50 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Matsufuji, Yasunori | Fukuoka, JP | 5 | 180 |
# of filed Patents : 5 Total Citations : 180 | |||
Takasu, Koji | Fukuoka, JP | 5 | 25 |
# of filed Patents : 5 Total Citations : 25 | |||
Tatsumi, Kiyotaka | Yamaguchi, JP | 1 | 5 |
# of filed Patents : 1 Total Citations : 5 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 1 Citation Count
- B03D Class
- 33.33 % this patent is cited more than
- 10 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 | May 3, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
Full Text

Legal Events
Date | Code | Event | Description |
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Feb 10, 2023 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF PATENT SECURITY INTEREST PREVIOUSLY RECORDED AT REEL/FRAME (040646/0799);ASSIGNOR:HSBC BANK USA, NATIONAL ASSOCIATION, AS RESIGNING AGENT;REEL/FRAME:062781/0544 Owner name: JPMORGAN CHASE BANK, N.A., AS SUCCESSOR AGENT, ILLINOIS Effective Date: Feb 10, 2023 |
Jul 11, 2022 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jan 24, 2022 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jun 18, 2019 | I | Issuance | |
Nov 17, 2016 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNORS:SEMTECH CORPORATION;SEMTECH NEW YORK CORPORATION;SIERRA MONOLITHICS, INC.;AND OTHERS;SIGNING DATES FROM 20151115 TO 20161115;REEL/FRAME:040646/0799 Owner name: HSBC BANK USA, NATIONAL ASSOCIATION, AS ADMINISTRA free format text: SECURITY INTEREST;ASSIGNORS:SEMTECH CORPORATION;SEMTECH NEW YORK CORPORATION;SIERRA MONOLITHICS, INC.;AND OTHERS;SIGNING DATES FROM 20151115 TO 20161115;REEL/FRAME:040646/0799 Owner name: HSBC BANK USA, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT, CALIFORNIA |
Jun 03, 2016 | F | Filing |

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