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Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:
(12) Patent: | (11) CA 2750392 |
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(54) English Title: | ANAEROBIC FERMENTATION TO PRODUCE BIOGAS |
(54) French Title: | FERMENTATION ANAEROBIQUE POUR PRODUIRE DES BIOGAZ |
Status: | Granted and Issued |
(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: | 2021-11-16 |
(22) Filed Date: | 2011-08-24 |
(41) Open to Public Inspection: | 2013-02-24 |
Examination requested: | 2016-08-24 |
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 process and apparatus for the anaerobic digestion of organic wastes,
preferably to
also produce a useful biogas, is described. The waste may have a total solids
(TS)
concentration of 6% or less while a digester is operated at a higher solids
concentration, for example with a feed TS concentration of 8- 12%. One or more
separation stages downstream of the digester separate active bacteria and
undigested
organics from the digestate, and return separated matter to the digester.
Optionally, a
feed thickening apparatus and step may be provided upstream of the digester.
The
upstream thickener and recycle from the downstream separation stages are
operated
such that the TS of the combined inputs to the digester is within a desired
range.
Un procédé et un dispositif de digestion anaérobique de déchets organiques, permettant en outre de produire un biogaz utilisable, sont décrits. Les déchets peuvent avoir une concentration totale de déchets solides (TS) de 6 % ou moins, alors que le digesteur fonctionne selon des concentrations de solides plus élevées, par exemple de lordre de 8 à 12 %. Une ou plusieurs opérations de séparation en aval du digesteur permettent de séparer les bactéries et les matières organiques non digérées du digestat, puis de les réinjecter dans le digesteur. On peut également recourir à un dispositif et à une opération dépaississement de la charge en amont du digesteur. Lépaississeur en amont et le recyclage issu des opérations de séparation aval sont tels que les entrées combinées dans le digesteur se situent dans une plage souhaitée.
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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Letter Sent | 2021-11-16 |
Inactive: Grant downloaded | 2021-11-16 |
Inactive: Grant downloaded | 2021-11-16 |
Grant by Issuance | 2021-11-16 |
Inactive: Cover page published | 2021-11-15 |
Pre-grant | 2021-09-24 |
Inactive: Final fee received | 2021-09-24 |
Notice of Allowance is Issued | 2021-05-25 |
Letter Sent | 2021-05-25 |
4 | 2021-05-25 |
Notice of Allowance is Issued | 2021-05-25 |
Inactive: Approved for allowance (AFA) | 2021-05-07 |
Inactive: Q2 passed | 2021-05-07 |
Amendment Received - Voluntary Amendment | 2020-12-30 |
Amendment Received - Response to Examiner's Requisition | 2020-12-30 |
Common Representative Appointed | 2020-11-07 |
Examiner's Report | 2020-09-04 |
Inactive: Report - No QC | 2020-08-26 |
Change of Address or Method of Correspondence Request Received | 2019-11-21 |
Amendment Received - Voluntary Amendment | 2019-11-21 |
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Inactive: S.30(2) Rules - Examiner requisition | 2019-06-03 |
Inactive: Report - No QC | 2019-05-23 |
Amendment Received - Voluntary Amendment | 2019-02-01 |
Inactive: S.30(2) Rules - Examiner requisition | 2018-08-02 |
Inactive: Report - No QC | 2018-08-01 |
Amendment Received - Voluntary Amendment | 2018-03-29 |
Change of Address or Method of Correspondence Request Received | 2018-03-12 |
Inactive: S.30(2) Rules - Examiner requisition | 2017-10-02 |
Inactive: Report - No QC | 2017-09-29 |
Letter Sent | 2016-08-31 |
All Requirements for Examination Determined Compliant | 2016-08-24 |
Request for Examination Requirements Determined Compliant | 2016-08-24 |
Request for Examination Received | 2016-08-24 |
Inactive: Cover page published | 2013-02-24 |
Application Published (Open to Public Inspection) | 2013-02-24 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: First IPC assigned | 2011-09-29 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: IPC removed | 2011-09-29 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: IPC assigned | 2011-09-29 |
Inactive: Filing certificate - No RFE (English) | 2011-09-08 |
Application Received - Regular National | 2011-09-08 |
There is no abandonment history.
The last payment was received on 2021-08-20
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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Application fee - standard | 2011-08-24 | ||
MF (application, 2nd anniv.) - standard | 02 | 2013-08-26 | 2013-08-09 |
MF (application, 3rd anniv.) - standard | 03 | 2014-08-25 | 2014-07-11 |
MF (application, 4th anniv.) - standard | 04 | 2015-08-24 | 2015-04-27 |
Request for examination - standard | 2016-08-24 | ||
MF (application, 5th anniv.) - standard | 05 | 2016-08-24 | 2016-08-24 |
MF (application, 6th anniv.) - standard | 06 | 2017-08-24 | 2017-08-02 |
MF (application, 7th anniv.) - standard | 07 | 2018-08-24 | 2018-08-24 |
MF (application, 8th anniv.) - standard | 08 | 2019-08-26 | 2019-08-26 |
MF (application, 9th anniv.) - standard | 09 | 2020-08-24 | 2020-08-14 |
MF (application, 10th anniv.) - standard | 10 | 2021-08-24 | 2021-08-20 |
Final fee - standard | 2021-09-27 | 2021-09-24 | |
MF (patent, 11th anniv.) - standard | 2022-08-24 | 2022-08-19 | |
MF (patent, 12th anniv.) - standard | 2023-08-24 | 2023-08-18 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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ANAERGIA INC. |
Past Owners on Record |
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ANDREW BENEDEK |