Sustained release compositions for biologically active materials
CA 1237292 A · Owner: Melamine Chemicals, Inc. · Inventors: Allan, G. Graham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
56-, ABSTRACT OF THE DISCLOSURE:, SUSTAINED RELEASE COMPOSITIONS FOR BIOLOGICALLY ACTIVE MATERIALS, Relates to granular slow release sources of biologically active substances, for application to or under the surface of the soil. Useful biologically active materials include herbicides insecticides, fungicides, nematocides, pesticides and other biocides plant, growth regulators, and the like. Particles of the biologically active material are intimately mixed with particles of a poorly soluble nitrogen source such as melamine for example, and a, binder, and made up in granular form. The form protects the biologically active material from the degradative effects of sunlight and oxygen, the …
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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 May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.