Centrifugal filter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 22, 1996
Grant Date -
N/A
app pub date -
Feb 9, 1995
filing date -
Mar 14, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The centrifugal filter comprises a rotatable travelling basket (5) disposed within a collector chamber (1). A machine body (2) which can be supported on a support (3) carries a bearing arrangement (8) for the hub (14) of the travelling basket (5). In the travelling basket (5) which partially comprises holes is present a filter element (20) in such a way that during the rotation of the travelling basket the liquid to be filtered can flow out through the filter element (20) and through these holes. For removing the filtrate, retained on the filter element and consisting of solid particles, a lifting device (22) is present which can be moved back and forth. The travelling basket (5) comprises a travelling basket neck (7) connected with the travelling basket hub (14), which neck is provided with passage openings which communicate at least partially with further passage openings disposed in the bottom portion of the machine body (2).
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
CH | A5 | CH688988 | Mar 14, 1994 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
PATENT SPECIFICATION (GRANTED WITHOUT PRELIMINARY EXAMINATION) | Filterzentrifuge. | Jul 15, 1998 | |||
EP | B1 | EP0672459 | Feb 17, 1995 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
Patent | Filterzentrifuge | May 26, 1999 | |||
JP | B2 | JP3383115 | Mar 13, 1995 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
PUBLISHED GRANTED PATENT (SECOND LEVEL) | CENTRIFUGAL FILTER | Mar 04, 2003 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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FERRUM AG | CH-5102 RUPPERSWIL |
International Classification(s)

- 1995 Application Filing Year
- B04B Class
- 64 Applications Filed
- 34 Patents Issued To-Date
- 53.13 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Rohr, Rene | Hunzenschwil, CH | 1 | 7 |
# of filed Patents : 1 Total Citations : 7 | |||
Suter, Jurg | Schafisheim, CH | 1 | 7 |
# of filed Patents : 1 Total Citations : 7 | |||
Weber, Eduard | Seon, CH | 5 | 32 |
# of filed Patents : 5 Total Citations : 32 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 7 Citation Count
- B04B Class
- 7.02 % this patent is cited more than
- 29 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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Nov 17, 2008 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Nov 17, 2008 | 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: SMALL ENTITY |
Oct 22, 2008 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Oct 22, 2008 |
Apr 28, 2008 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Mar 18, 2004 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Dec 03, 2003 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Mar 20, 2000 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Oct 22, 1996 | I | Issuance | |
Feb 09, 1995 | F | Filing | |
Jan 25, 1995 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WEBER, EDUARD;ROHR, RENE';SUTER, JURG;REEL/FRAME:007354/0867 Owner name: FERRUM AG, SWITZERLAND Effective Date: Jan 25, 1995 |
Mar 14, 1994 | PD | Priority Date |

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