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(12) Patent: | (11) CA 1334842 |
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(21) Application Number: | 1334842 |
(54) English Title: | SYSTEMS TO DRILL MINERALS ETC... |
(54) French Title: | SYSTEMES POUR FORCER DES MINERAIS |
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: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | 1995-03-21 |
(22) Filed Date: | 1988-03-10 |
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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System for drilling minerals, rocks and others of
that kind with the use of rotating disk- or slab-
tools, therewith characterized , that the material to
be drilled will be axcavated - as the case may be
pre-cut / reliefed - chiefly in a frontal advance
direction, but also radially from the inside to the
outside - layerwise undercut and always breaking into
the free space. In combination hereto a process-
patent is demanded for a propulsive aggregate being
autonomic by supporting itself on the pre-worked /
pre-cut excavating front - or rather being lead on it
or through it and keeping this way a constant
undercutting depth.
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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Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Time Limit for Reversal Expired | 2005-03-21 |
Letter Sent | 2004-03-22 |
Inactive: Entity size changed | 2003-04-03 |
Inactive: Entity size changed | 1999-12-14 |
Grant by Issuance | 1995-03-21 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Paid Date |
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MF (category 1, 3rd anniv.) - standard | 1998-03-23 | 1997-10-24 | |
MF (category 1, 4th anniv.) - standard | 1999-03-22 | 1998-11-03 | |
MF (category 1, 5th anniv.) - small | 2000-03-21 | 1999-12-06 | |
MF (category 1, 6th anniv.) - small | 2001-03-21 | 2000-11-28 | |
Reversal of deemed expiry | 2001-03-21 | 2000-11-28 | |
MF (category 1, 7th anniv.) - small | 2002-03-21 | 2001-10-29 | |
MF (category 1, 8th anniv.) - standard | 2003-03-21 | 2003-03-21 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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HANNELORE BECHEM |
Past Owners on Record |
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DIETER LENZEN |
KLAUS BECHEM |
PHILIP BECHEM |
ULRICH BECHEM |