Shaped concrete block with raised area and shaped concrete block kit
CA 2324592 A1 · Owner: Hagenah, Gerhard · Inventors: Hagenah, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a shaped concrete block having a raised area and a shaped concrete block kit used to delimit soil covers. Shaped concrete blocks notably troughed blocks (13) and drainage blocks (14) are used to delimit (12) a paving (10) in the transitional area to a green area (11). The shaped concrete blocks present a (unbroken) longitudinal channel (22) and possibly several transverse channels (32) for the targeted guiding and drainage of liquids accumulating on the paving. In this case it can be difficult to (visually) indicate the delimitation (12) formed by the troughed blocks (13) and drainage blocks (14). To this end the troughed blocks (13) have a raised area (23) …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.