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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 Application: | (11) CA 2271432 |
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(54) English Title: | FILTER CIGARETTES WITH AIR CHAMBERS |
(54) French Title: | CIGARETTES A BOUT FILTRE AVEC CHAMBRE A AIR |
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: | NORMAN M. CAMERONCAMERON, NORMAN M. |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 1999-05-11 |
(41) Open to Public Inspection: | 2000-11-11 |
Examination requested: | 1999-05-11 |
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 filter cigarette has an outer combustible tube which is substantially filled
with tobacco.
There is a second cylindrical member axially aligned with the first
cylindrical member and
spaced-apart therefrom. The second member is substantially filled with a
filtering medium.
A third cylindrical member is between the first member and the second member
and is
connected to the first member and the second member. The third member has an
outer tube
and an empty interior, providing an air space between the tobacco and the
filtering medium.
There may be an aperture extending through the outer tube, allowing air to be
drawn into the
space when a smoker draws on the cigarette. This cools smoke in the tubular
member and
thereby condenses harmful products out of the smoke before the smoke is drawn
through the
filter.
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.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Event History , Maintenance Fee and Payment History should be consulted.
Description | Date |
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Inactive: IPC expired | 2020-01-01 |
Inactive: IPC expired | 2020-01-01 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Time Limit for Reversal Expired | 2002-05-13 |
Application Not Reinstated by Deadline | 2002-05-13 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2001-05-11 |
Application Published (Open to Public Inspection) | 2000-11-11 |
Inactive: Cover page published | 2000-11-10 |
Inactive: IPC assigned | 1999-06-28 |
Inactive: First IPC assigned | 1999-06-28 |
Inactive: Filing certificate - RFE (English) | 1999-06-10 |
Application Received - Regular National | 1999-06-09 |
All Requirements for Examination Determined Compliant | 1999-05-11 |
Request for Examination Requirements Determined Compliant | 1999-05-11 |
Abandonment Date | Reason | Reinstatement Date |
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2001-05-11 |
Fee Type | Anniversary Year | Due Date | Paid Date |
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Request for examination - small | 1999-05-11 | ||
Application fee - small | 1999-05-11 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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HAN JO LEE |
TAEJUN KIM |
Past Owners on Record |
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None |