Multi-stage pusher centrifuge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 28, 2006
Grant Date -
Oct 21, 2004
app pub date -
Apr 5, 2004
filing date -
Apr 16, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a multi-stage pusher centrifuge (1) for the separation of a mixture (2) into a solid cake (3) and into a liquid phase (4). The multi-stage pusher centrifuge (1) includes an outer screen drum (6) rotatable about an axis of rotation (5) and at least one screen stage (7) arranged in the outer screen drum (6), and a mixture distributor (8) arranged in the screen drum (6) with a pusher base apparatus (9), with either the screen stage (7) or the pusher base apparatus (9) being arranged movably to and fro along the axis of rotation (5) such that the solid cake (3) is displaceable by means of the pusher base apparatus (9). The multi-stage centrifuge further includes an infeed device (10) with which the mixture (2) can be introduced via the mixture distributor (8) into an empty space (11) which arises on the displacement of the solid cake (3) by the pusher base apparatus (9), with the pusher base apparatus (9) including a pre-acceleration funnel (12) which extends in a substantially divergent manner in the direction towards the infeed device (10) and the pre-acceleration funnel (12) being designed as a pre-acceleration screen (12).
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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FERRUM PROCESS SYSTEMS AG | INDUSTRIESTRASSE 11 SCHAFISHEIM 5503 |
International Classification(s)

- 2004 Application Filing Year
- B01D Class
- 2283 Applications Filed
- 1180 Patents Issued To-Date
- 51.69 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Geiger, Roy | Schafisheim, CH | 4 | 17 |
# of filed Patents : 4 Total Citations : 17 | |||
Reinach, Harald | Remetschwiel, DE | 5 | 19 |
# of filed Patents : 5 Total Citations : 19 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- B01D Class
- 3.76 % this patent is cited more than
- 19 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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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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Jun 28, 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 30, 2018 | I | Issuance | |
Jan 10, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 14, 2017 | P | Published | |
Oct 20, 2016 | F | Filing | |
Sep 23, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, CHAN HO;REEL/FRAME:040071/0011 Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Effective Date: Sep 23, 2016 |
Jun 09, 2016 | PD | Priority Date |

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