Method of and device for establishing a vegetable cover on at least partially denuded land
CA 2062501 C · Owner: Ullmann, Martin · Inventors: Ullmann, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A netting of cords which are connected to each other by knots or in any other suitable way carries seedlings in the form of sprouted or unsprouted seeds which are confined in and/or otherwise at least partly embedded in and/or simply adhere to the cords. The cords can further carry particles of fertilizer and/or the cords can consist at least in part of decomposable material which then serves as a fertilizer for the seedlings. The netting is spread out over a selected piece of at least partially denuded flat, horizontal or hilly land and is or can be anchored to the ground. The thus applied netting is then watered and/or fertilized or is simply exposed to the elements to promote sprouting …
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 March 9, 1992 and granted October 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2014.
- 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.