High absorptivity sodium tripolyphosphate
CA 1307902 C · Owner: Occidental Chemical Corporation · Inventors: Saran, Mohan S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High absorbtivity sodium tripolyphosphate is prepared by moisturizing the anhydrous orthophosphate particles produced by spray-drying an aqueous solution of sodium phosphates during the production of sodium tripolyphosphate. Following moisturization the, hydrated particles are calcined at a temperature within the range of from about 300°C to about 600°C to produce a granular sodium tripolyphosphate product having an absorbtivity value of at least about 30%.
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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
- 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.