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(12) Patent Application: | (11) CA 2766361 |
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(54) English Title: | CO2 REFRIGERATION SYSTEM FOR ICE-PLAYING SURFACE |
(54) French Title: | SYSTEME DE REFRIGERATION CO2 POUR SURFACE DE JEU GLACEE |
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: | NORTON ROSE FULBRIGHT CANADA LLP/S.E.N.C.R.L., S.R.L. |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 2012-01-30 |
(41) Open to Public Inspection: | 2013-07-30 |
Examination requested: | 2012-01-30 |
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: | None |
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A CO2 refrigeration system comprising a transfer
circuit for heat exchange between a supracompression circuit
of CO2 refrigerant, and an evaporation circuit of CO2
refrigerant. A transfer circuit absorbs heat from the CO2
refrigerant of the evaporation circuit, and releases heat to
the CO2 refrigerant of the supracompression circuit. The
supracompression circuit comprises a compression stage in
which CO2 refrigerant is compressed to at least a
supra-compression state, a cooling stage in which the CO2
refrigerant from the compression stage releases heat, and a
pressure-regulating unit in a line extending from the
cooling stage to the evaporation heat exchanger to maintain
a pressure differential therebetween. The
evaporation
circuit receives CO2 refrigerant having released heat in the
condensation heat exchanger. The
evaporation circuit
comprises a condensation reservoir in which CO2 refrigerant
is accumulated in a liquid state, and an evaporation stage
in which the CO2 refrigerant from the condensation reservoir
absorbs heat to cool an ice-playing surface, to then return
to one of the condensation reservoir and the condensation
exchanger.
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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Application Not Reinstated by Deadline | 2017-07-10 |
Inactive: Dead - No reply to s.30(2) Rules requisition | 2017-07-10 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2017-01-30 |
Inactive: Abandoned - No reply to s.30(2) Rules requisition | 2016-07-08 |
Inactive: S.30(2) Rules - Examiner requisition | 2016-01-08 |
Inactive: Report - No QC | 2016-01-07 |
Inactive: Office letter | 2016-01-05 |
Withdraw from Allowance | 2016-01-05 |
Letter Sent | 2015-12-15 |
Inactive: Protest acknowledged | 2015-12-15 |
Inactive: Protest/prior art received | 2015-12-08 |
4 | 2015-11-20 |
Letter Sent | 2015-11-20 |
Notice of Allowance is Issued | 2015-11-20 |
Inactive: Q2 passed | 2015-11-17 |
Inactive: Approved for allowance (AFA) | 2015-11-17 |
Amendment Received - Voluntary Amendment | 2015-06-11 |
Inactive: S.30(2) Rules - Examiner requisition | 2014-12-11 |
Inactive: Report - No QC | 2014-11-24 |
Inactive: Office letter | 2014-08-22 |
Withdraw from Allowance | 2014-07-29 |
Inactive: Protest/prior art received | 2014-05-27 |
Notice of Allowance is Issued | 2014-04-25 |
Letter Sent | 2014-04-25 |
4 | 2014-04-25 |
Notice of Allowance is Issued | 2014-04-25 |
Inactive: Q2 passed | 2014-04-17 |
Inactive: Approved for allowance (AFA) | 2014-04-17 |
Amendment Received - Voluntary Amendment | 2014-03-04 |
Inactive: S.30(2) Rules - Examiner requisition | 2013-09-04 |
Inactive: Cover page published | 2013-08-05 |
Application Published (Open to Public Inspection) | 2013-07-30 |
Letter Sent | 2013-03-08 |
Inactive: First IPC assigned | 2012-07-27 |
Inactive: IPC assigned | 2012-07-27 |
Inactive: Filing certificate - RFE (English) | 2012-02-14 |
Letter Sent | 2012-02-14 |
Application Received - Regular National | 2012-02-14 |
Request for Examination Requirements Determined Compliant | 2012-01-30 |
All Requirements for Examination Determined Compliant | 2012-01-30 |
Abandonment Date | Reason | Reinstatement Date |
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2017-01-30 |
The last payment was received on 2015-11-02
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 | 2012-01-30 | ||
Request for examination - standard | 2012-01-30 | ||
Registration of a document | 2013-02-18 | ||
MF (application, 2nd anniv.) - standard | 02 | 2014-01-30 | 2014-01-29 |
MF (application, 3rd anniv.) - standard | 03 | 2015-01-30 | 2015-01-15 |
MF (application, 4th anniv.) - standard | 04 | 2016-02-01 | 2015-11-02 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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TOROMONT INDUSTRIES LTD. |
Past Owners on Record |
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SERGE DUBE |