Crystalline metallophosphates
CA 2248656 A1 · Owner: Norsk Hydro Asa · Inventors: Karlsson, Arne; Halvorsen, Erling N.; Lillerud, Karl Petter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Microporous crystalline metallophosphate composition having an essential framework structure whose chemical composition in the as synthesised form expressed in terms of mole rations of oxides is: mR(MxAlyPz)O2 where M is silicon, x+y+z=1, m may have a value from 0.02 to 0.3 R is at least one , templating agent, x y and z represent the mole fractions of silicon aluminium and phosphorous present in the product and where x may have a value , from 0 to 0.5 y may have a value from 0.25 to 0.5 and z may have a value from 0.25 to 0.5, and where one reactive form of fluoride may be present in an effective amount to form the product, and having a characteristic X-ray powder diffraction pattern …
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 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2019.
- 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.