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(12) Patent: | (11) CA 2107277 |
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(54) English Title: | METHOD AND APPARATUS FOR TWO-SIDE COATING OF A THIN PRINTING PAPER WEB MADE OF MECHANICAL PULP |
(54) French Title: | APPAREIL SERVANT A COUCHER DES DEUX COTES UNE BANDE MINCE DE PAPIER D'IMPRESSION OBTENU A PARTIR DE PATE MECANIQUE, ET METHODE CONNEXE |
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: | GOWLING WLG (CANADA) LLP |
(74) Associate agent: | |
(45) Issued: | 2006-03-21 |
(22) Filed Date: | 1993-09-29 |
(41) Open to Public Inspection: | 1994-05-04 |
Examination requested: | 2000-03-06 |
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 invention relates to a method and
apparatus for two-side coating of a light
base weight printing paper web containing
mechanical pulp or recycled fiber.
According to the method the first side of
a web (5) is coated in a first coating
station (1), the first-side coat is dried
at least partially in a dryer unit (3),
the second side of the web (5) is coated
subsequent to the drying of the first
side in a second coating station (2), and
the second-side coat is dried at least
partially in a second dryer unit (4).
According to the invention both the
first-side coat and the second-side coat
are formed by applying a required amount
of coating mix onto the perimeter of a
soft film-coating roll (22) and subsequently
transferring said coat film to
the web (5) in a nip (N1) formed between
a backing roll (24) and said film-coating
roll (22).
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.
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 | 2007-10-01 |
Letter Sent | 2006-09-29 |
Grant by Issuance | 2006-03-21 |
Inactive: Cover page published | 2006-03-20 |
Inactive: IPC from MCD | 2006-03-11 |
Letter Sent | 2006-02-06 |
Letter Sent | 2006-01-12 |
Inactive: Office letter | 2006-01-12 |
Letter Sent | 2006-01-12 |
Letter Sent | 2006-01-12 |
Letter Sent | 2006-01-12 |
Letter Sent | 2006-01-12 |
Inactive: Correspondence - Transfer | 2005-12-23 |
Inactive: Correspondence - Transfer | 2005-12-22 |
Inactive: Single transfer | 2005-12-19 |
Pre-grant | 2005-11-25 |
Inactive: Final fee received | 2005-11-25 |
Inactive: Single transfer | 2005-11-16 |
Letter Sent | 2005-05-25 |
Notice of Allowance is Issued | 2005-05-25 |
Notice of Allowance is Issued | 2005-05-25 |
4 | 2005-05-25 |
Inactive: IPC assigned | 2005-05-13 |
Inactive: IPC assigned | 2005-05-13 |
Inactive: Approved for allowance (AFA) | 2005-04-14 |
Amendment Received - Voluntary Amendment | 2004-04-28 |
Inactive: S.30(2) Rules - Examiner requisition | 2003-11-17 |
Inactive: S.29 Rules - Examiner requisition | 2003-11-17 |
Amendment Received - Voluntary Amendment | 2003-06-23 |
Inactive: S.30(2) Rules - Examiner requisition | 2002-12-31 |
Amendment Received - Voluntary Amendment | 2000-10-05 |
Inactive: Status info is complete as of Log entry date | 2000-04-04 |
Letter Sent | 2000-04-04 |
Inactive: Application prosecuted on TS as of Log entry date | 2000-04-04 |
All Requirements for Examination Determined Compliant | 2000-03-06 |
Request for Examination Requirements Determined Compliant | 2000-03-06 |
Application Published (Open to Public Inspection) | 1994-05-04 |
There is no abandonment history.
The last payment was received on 2005-08-26
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, 4th anniv.) - standard | 04 | 1997-09-29 | 1997-08-25 |
MF (application, 5th anniv.) - standard | 05 | 1998-09-29 | 1998-08-18 |
MF (application, 6th anniv.) - standard | 06 | 1999-09-29 | 1999-07-26 |
Request for examination - standard | 2000-03-06 | ||
MF (application, 7th anniv.) - standard | 07 | 2000-09-29 | 2000-08-03 |
MF (application, 8th anniv.) - standard | 08 | 2001-10-01 | 2001-07-30 |
MF (application, 9th anniv.) - standard | 09 | 2002-09-30 | 2002-08-22 |
MF (application, 10th anniv.) - standard | 10 | 2003-09-29 | 2003-08-14 |
MF (application, 11th anniv.) - standard | 11 | 2004-09-29 | 2004-08-27 |
MF (application, 12th anniv.) - standard | 12 | 2005-09-29 | 2005-08-26 |
Registration of a document | 2005-11-16 | ||
Final fee - standard | 2005-11-25 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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VALMET PAPER MACHINERY INC. |
METSO OYJ |
M-REAL OYJ |
METSA-SERLA PAPERI JA KARTONKI OY |
Past Owners on Record |
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KAI VIKMAN |
RAUNO RANTANEN |