Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.
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 1186470 |
---|---|
(21) Application Number: | 1186470 |
(54) English Title: | PROTECTIVE SHEET, IN PARTICULAR FOR A FOUNDATION WALL OR A FLOOR ON THE GROUND |
(54) French Title: | FEUILLE PROTECTRICE, NOTAMMENT POUR MUR DE FONDATION OU PLANCHER EN CONTACT AVEC LE SOL |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
|
---|---|
(72) Inventors : |
|
(73) Owners : | |
(71) Applicants : | |
(74) Agent: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | 1985-05-07 |
(22) Filed Date: | 1982-03-18 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
---|
(30) Application Priority Data: | None |
---|
ABSTRACT OF THE DISCLOSURE
The invention relates to a protective sheet, in
particular for a foundation wall or a floor on the ground,
said sheet being made of a relatively stiff plastics
material. A large number of spaced knobs protrude from
one side of the sheet, whereby the other side obtains a
corresponding number of recesses. The knobs have a
centrally disposed crater-like portion, the narrowest end
of which is flush with the other side of the sheet.
Between adjacent recesses there is arranged an open channel
provided through forming such that on the said one side of
the sheet there appears a corresponding ridge between the
knobs. Externally of the other side of the sheet there may
be arranged a filtrating canvas co-acting with said channels.
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.
Sorry, the representative drawing for patent document number 1186470 was not found.
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 |
---|---|
Inactive: Expired (old Act Patent) latest possible expiry date | 2002-05-07 |
Grant by Issuance | 1985-05-07 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
None |
Past Owners on Record |
---|
JON BERGSLAND |