Zeolite lz-277 and process for preparing same
CA 2090951 A1 · Owner: Uop · Inventors: Skeels, Gary W.; Sears, Marilyn R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ZEOLITE FOR LZ-277 AND PROCESS FOR PREPARING SAME" ABSTRACT, A novel aluminosilicate zeolite denominated L2-277, is synthesized hydrothermally from aqueous gels in the Na2O - Al2O3 - SiO2 system and in the absence of an organic templating agent. The as-synthesized L2-277 has a chemical composition on an anhydrous basis expressed in terms of molar oxide ratios of:, 1.0 ? 0.1 Na2O : Al2O3 : 3-15 SiO2 and has a low adsorptive capacity for SF6 compared with the prior known, and possibly topologically related zeolite Phi.
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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
- Filed March 3, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2015.
- 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.