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(12) Patent: | (11) CA 2614783 |
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(54) English Title: | ELECTROPOLISHING PROCESS |
(54) French Title: | PROCEDE DE POLISSAGE ELECTROLYTIQUE |
Status: | Expired and beyond the Period of Reversal |
(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: | BORDEN LADNER GERVAIS LLP |
(74) Associate agent: | |
(45) Issued: | 2014-09-23 |
(22) Filed Date: | 2007-11-13 |
(41) Open to Public Inspection: | 2008-05-14 |
Examination requested: | 2012-10-10 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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The present invention relates to a method for the electropolishing of surfaces of metals and metal alloys. Said method is characterized in particular in that it can be applied to a wide range of metals. Thus, it is suitable for the electropolishing of metal surfaces comprising iron, tungsten, magnesium, aluminum or an alloy of these metals. The electrolyte used in the method comprises methanesulfonic acid and at least one alcoholic compound selected from aliphatic diols of general formula C n H2n(OH)2 with n = 2-6 and alicyclic alcohols of general formula C m H2m-1OH with m = 5-8.
La présente invention a trait à un procédé de polissage électrolytique de surfaces de métaux et dalliages métalliques. Ledit procédé est caractérisé notamment en ce quil est possible de lappliquer sur une vaste gamme de métaux. Ainsi, il convient au polissage électrolytique de surfaces métalliques contenant du fer, du tungstène, du magnésium, de laluminium ou un alliage de ces métaux. Lélectrolyte utilisé dans le procédé comprend de lacide méthanesulfonique et au moins un composant alcoolique choisi parmi les diols aliphatiques de la formule générale C n H2n(OH)2 avec n = 2-6 et des alcools alicycliques de la formule générale C m H2m-1OH avec m = 5-8.
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.
Sorry, the representative drawing for patent document number 2614783 was not found.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Time Limit for Reversal Expired | 2021-08-31 |
Inactive: COVID 19 Update DDT19/20 Reinstatement Period End Date | 2021-03-13 |
Letter Sent | 2020-11-13 |
Letter Sent | 2020-08-31 |
Inactive: COVID 19 - Deadline extended | 2020-08-19 |
Inactive: COVID 19 - Deadline extended | 2020-08-06 |
Inactive: COVID 19 - Deadline extended | 2020-07-16 |
Inactive: COVID 19 - Deadline extended | 2020-07-02 |
Inactive: COVID 19 - Deadline extended | 2020-06-10 |
Inactive: COVID 19 - Deadline extended | 2020-05-28 |
Inactive: COVID 19 - Deadline extended | 2020-05-14 |
Inactive: COVID 19 - Deadline extended | 2020-04-28 |
Letter Sent | 2019-11-13 |
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Grant by Issuance | 2014-09-23 |
Inactive: Cover page published | 2014-09-22 |
Pre-grant | 2014-07-11 |
Inactive: Final fee received | 2014-07-11 |
Notice of Allowance is Issued | 2014-05-13 |
Notice of Allowance is Issued | 2014-05-13 |
Letter Sent | 2014-05-13 |
Inactive: Approved for allowance (AFA) | 2014-04-29 |
Inactive: QS passed | 2014-04-29 |
Amendment Received - Voluntary Amendment | 2014-02-20 |
Inactive: S.30(2) Rules - Examiner requisition | 2013-08-20 |
Amendment Received - Voluntary Amendment | 2012-11-02 |
Letter Sent | 2012-10-17 |
Request for Examination Received | 2012-10-10 |
Request for Examination Requirements Determined Compliant | 2012-10-10 |
All Requirements for Examination Determined Compliant | 2012-10-10 |
Application Published (Open to Public Inspection) | 2008-05-14 |
Inactive: Cover page published | 2008-05-13 |
Inactive: First IPC assigned | 2008-04-29 |
Inactive: IPC assigned | 2008-04-29 |
Inactive: IPC assigned | 2008-04-29 |
Inactive: IPC assigned | 2008-04-29 |
Inactive: IPC assigned | 2008-04-29 |
Inactive: IPC assigned | 2008-04-28 |
Letter Sent | 2008-04-21 |
Inactive: Single transfer | 2008-02-21 |
Inactive: Filing certificate - No RFE (English) | 2008-01-31 |
Application Received - Regular National | 2008-01-31 |
Amendment Received - Voluntary Amendment | 2007-11-13 |
There is no abandonment history.
The last payment was received on 2014-07-10
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
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web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - standard | 2007-11-13 | ||
Registration of a document | 2008-02-21 | ||
MF (application, 2nd anniv.) - standard | 02 | 2009-11-13 | 2009-09-14 |
MF (application, 3rd anniv.) - standard | 03 | 2010-11-15 | 2010-09-13 |
MF (application, 4th anniv.) - standard | 04 | 2011-11-14 | 2011-09-01 |
MF (application, 5th anniv.) - standard | 05 | 2012-11-13 | 2012-09-06 |
Request for examination - standard | 2012-10-10 | ||
MF (application, 6th anniv.) - standard | 06 | 2013-11-13 | 2013-08-20 |
MF (application, 7th anniv.) - standard | 07 | 2014-11-13 | 2014-07-10 |
Final fee - standard | 2014-07-11 | ||
MF (patent, 8th anniv.) - standard | 2015-11-13 | 2015-10-29 | |
MF (patent, 9th anniv.) - standard | 2016-11-14 | 2016-10-28 | |
MF (patent, 10th anniv.) - standard | 2017-11-14 | 2017-11-02 | |
MF (patent, 11th anniv.) - standard | 2018-11-13 | 2018-10-29 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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POLIGRAT GMBH |
Past Owners on Record |
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OLAF BOEHME |
SIEGFRIED PIESSLINGER-SCHWEIGER |