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(12) Patent: | (11) CA 2048423 |
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(54) English Title: | DISPOSITIF DE FILTRATION AVEC RECIRCULATION |
(54) French Title: | RECIRCULATION AND FILTRATION DEVICE |
Status: | Term Expired - Post Grant Beyond Limit |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | ROBIC AGENCE PI S.E.C./ROBIC IP AGENCY LP |
(74) Associate agent: | |
(45) Issued: | 1994-08-02 |
(22) Filed Date: | 1991-08-02 |
(41) Open to Public Inspection: | 1993-02-03 |
Examination requested: | 1992-11-12 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | French |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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Le dispositif de filtration d'un liquide brut
comprend une pompe axiale pour liquide avec recirculation
afin d'augmenter la vitesse du liquide à l'intérieur des
filtres. L'augmentation de la vitesse du liquide transitant
par des filtres permet d'assurer une excellente propreté de
ces derniers et ainsi d'éviter leur colmatage. La pompe
axiale comprend deux étages dont le premier sert à pomper le
liquide brut et le second sert à pomper le même liquide brut
avec en plus le liquide concentré prélevé à la sortie du
filtre. La recirculation du liquide concentré prélevé permet
d'avoir un plus grand débit que le débit de liquide à
filtrer. Le dispositif permet notamment d'éviter
l'utilisation d'une pompe auxiliaire de recirculation en
plus de la pompe principale.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Description | Date |
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Inactive: Expired (new Act pat) | 2011-08-02 |
Inactive: Correspondence - MF | 2010-08-10 |
Letter Sent | 2008-07-11 |
Inactive: Office letter | 2007-01-05 |
Inactive: Corrective payment - s.78.6 Act | 2006-12-06 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: Entity size changed | 2002-08-01 |
Inactive: Late MF processed | 1997-10-21 |
Inactive: Late MF processed | 1997-10-21 |
Letter Sent | 1997-08-04 |
Grant by Issuance | 1994-08-02 |
Application Published (Open to Public Inspection) | 1993-02-03 |
All Requirements for Examination Determined Compliant | 1992-11-12 |
Request for Examination Requirements Determined Compliant | 1992-11-12 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Paid Date |
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MF (patent, 6th anniv.) - standard | 1997-08-04 | 1997-10-21 | |
Reversal of deemed expiry | 1997-08-04 | 1997-10-21 | |
MF (patent, 7th anniv.) - standard | 1998-08-03 | 1998-07-14 | |
MF (patent, 8th anniv.) - standard | 1999-08-02 | 1999-07-16 | |
MF (patent, 9th anniv.) - standard | 2000-08-02 | 2000-07-07 | |
MF (patent, 10th anniv.) - standard | 2001-08-02 | 2001-07-05 | |
MF (patent, 11th anniv.) - standard | 2002-08-02 | 2002-07-17 | |
MF (patent, 12th anniv.) - standard | 2003-08-04 | 2003-07-08 | |
MF (patent, 13th anniv.) - standard | 2004-08-02 | 2004-07-22 | |
MF (patent, 14th anniv.) - standard | 2005-08-02 | 2005-07-08 | |
MF (patent, 15th anniv.) - standard | 2006-08-02 | 2006-08-01 | |
2006-12-06 | |||
MF (patent, 16th anniv.) - standard | 2007-08-02 | 2007-07-27 | |
Registration of a document | 2008-02-14 | ||
MF (patent, 17th anniv.) - standard | 2008-08-04 | 2008-06-26 | |
MF (patent, 18th anniv.) - standard | 2009-08-03 | 2009-06-01 | |
MF (patent, 19th anniv.) - standard | 2010-08-02 | 2010-04-30 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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DOMINION & GRIMM INC. |
Past Owners on Record |
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ANDRE PELLERIN |