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(12) Patent Application: | (11) CA 2067727 |
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(54) English Title: | COATING, AND A COATING METHOD, FOR A STEAM TURBINE AND ADJOINING STEEL SURFACES |
(54) French Title: | ENDUIT POUR TURBINE A VAPEUR ET SURFACES D'ACIER CONTIGUES, ET METHODE D'ENDUCTION CONNEXE |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(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: | AVENTUM IP LAW LLP |
(74) Associate agent: | |
(45) Issued: | |
(86) PCT Filing Date: | 1991-09-03 |
(87) Open to Public Inspection: | 1992-03-19 |
Examination requested: | 1998-09-02 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/FI1991/000269 |
(87) International Publication Number: | FI1991000269 |
(85) National Entry: | 1992-04-21 |
(30) Application Priority Data: | ||||||
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2067727 9204480 PCTABS00011
The present invention relates to the protection of the casing,
division planes, piping, superheaters and other steel parts of a
steam turbine which are subjected in a turbine plant to some
corrosive and erosive wear caused by steam, the coating comprising a
coating layer produced by the thermal spraying of a steel, alloyed
amply with chromium and aluminum, which during the coating
process oxidizes strongly in the spray, whereby large amounts of
chromium and aluminum oxides are formed, which will remain inside the
coating, surrounded by a steel matrix, and after the coating
process there will form on the surface of the coating layer, under the
oxidizing action of air, a dense chromium and aluminum oxide
layer. Another object of the invention is a related coating method.
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 2067727 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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Inactive: Adhoc Request Documented | 2018-06-06 |
Revocation of Agent Requirements Determined Compliant | 2018-05-18 |
Appointment of Agent Requirements Determined Compliant | 2018-05-18 |
Inactive: IPC expired | 2016-01-01 |
Inactive: IPC expired | 2016-01-01 |
Inactive: Dead - No reply to s.30(2) Rules requisition | 2007-10-11 |
Application Not Reinstated by Deadline | 2007-10-11 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2007-09-04 |
Inactive: Abandoned - No reply to s.30(2) Rules requisition | 2006-10-11 |
Inactive: Abandoned - No reply to s.29 Rules requisition | 2006-10-11 |
Inactive: S.30(2) Rules - Examiner requisition | 2006-04-11 |
Inactive: S.29 Rules - Examiner requisition | 2006-04-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Letter Sent | 2005-08-30 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2005-08-08 |
Letter Sent | 2004-09-20 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2004-09-03 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2004-09-01 |
Inactive: MF/reinstatement fee unallocated - Log 25 deleted | 2003-09-23 |
Letter Sent | 2003-09-22 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2003-09-03 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2003-09-03 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2002-09-03 |
Amendment Received - Voluntary Amendment | 2000-09-01 |
Inactive: S.30(2) Rules - Examiner requisition | 2000-05-03 |
Inactive: Status info is complete as of Log entry date | 1998-09-22 |
Inactive: RFE acknowledged - Prior art enquiry | 1998-09-22 |
Inactive: Application prosecuted on TS as of Log entry date | 1998-09-22 |
All Requirements for Examination Determined Compliant | 1998-09-02 |
Request for Examination Requirements Determined Compliant | 1998-09-02 |
Application Published (Open to Public Inspection) | 1992-03-19 |
Abandonment Date | Reason | Reinstatement Date |
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2007-09-04 | ||
2004-09-03 | ||
2003-09-03 | ||
2002-09-03 |
The last payment was received on 2006-08-30
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
Patent Fees
web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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MF (application, 6th anniv.) - standard | 06 | 1997-09-03 | 1997-08-26 |
MF (application, 7th anniv.) - standard | 07 | 1998-09-03 | 1998-09-02 |
Request for examination - standard | 1998-09-02 | ||
MF (application, 8th anniv.) - standard | 08 | 1999-09-03 | 1999-08-03 |
MF (application, 9th anniv.) - standard | 09 | 2000-09-05 | 2000-08-29 |
MF (application, 10th anniv.) - standard | 10 | 2001-09-04 | 2001-08-30 |
MF (application, 11th anniv.) - standard | 11 | 2002-09-03 | 2003-09-03 |
Reinstatement | 2003-09-03 | ||
MF (application, 12th anniv.) - standard | 12 | 2003-09-03 | 2004-09-01 |
Reinstatement | 2004-09-01 | ||
2004-09-01 | |||
Reinstatement | 2005-08-08 | ||
MF (application, 13th anniv.) - standard | 13 | 2004-09-03 | 2005-08-08 |
MF (application, 14th anniv.) - standard | 14 | 2005-09-06 | 2005-08-24 |
MF (application, 15th anniv.) - standard | 15 | 2006-09-05 | 2006-08-30 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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TAMPELLA TELATEK OY |
Past Owners on Record |
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BJARNE HELLMAN |
JAAKKO TENKULA |
JORMA MAJAVA |