Controlled release fertilizer gel composition and process for its production
CA 1290585 C · Owner: Goertz, Harvey Maurice · Inventors: Goertz, Harvey Maurice
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methylene diurea, either alone or as a component of methylene urea polymers acts as a gelling agent for producing a gel composition capable of suspending particles which are insoluble in a liquid medium. Methylene diurea as the gelling agent in a liquid medium can be used to obtain novel gel compositions in the absence of added thickener-suspending agents. The methylene diurea is present in an amount greater than the solubility limit of methylene diurea in the liquid medium and in an amount sufficient to provide a gel for suspending insoluble particles. The process for producing the gel composition includes subjecting a dry methylene urea composition in particulate form to a shearing action …
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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
- Granted October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.