Zeolite nu-86
CA 2044959 C · Owner: Institut Francais Du Petrole · Inventors: Casci, John Leonello
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A zeolite, designated zeolite NU-86, having a molar composition expressed by the formula, 100 X02: equal to or less than 10 Y2O3: equal to or less than 20 R2/nO where R is one or more cations of valency n, X is silicon and/or germanium Y is, one or more of aluminium, iron, gallium boron, titanium, vanadium, zirconium, molybdenum arsenic, antimony, chromium and manganese and having an X-ray diffraction pattern including the lines shown in Table 1 is prepared from a reaction mixture comprising XO2 (preferably silica) Y2O3, (preferably alumina) and a polymethylene alpha omega-diammonium cation. This zeolite is a useful catalyst for a variety of reactions.
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 June 19, 1991 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2013.
- 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.