Preparation of materials useful as plant nutrients
CA 1163821 A · Owner: Unilever Plc · Inventors: Menon, Kuruvakkat K.G.; Sarma, Vadali S.; Rao, Bookinkere C.S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plant nutrient composition is obtained by extracting a complex fraction comprising a mixture of water-insoluble long-chain organic compounds from natural plant material especially from rice bran wax. The fraction is preferably obtained by saponifying rice bran wax and recovering the unsaponifiable residue. The fraction can be employed in dilute aqueous emulsion form as a foliar spray to enhance the growth and yield of many crops, such as rice wheat and, maize, especially in marginal agricultural areas.
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
- Granted March 20, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2001.
- 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.