Construction material containing catalytic cracking catalyst particles
CA 2031589 A1 · Owner: Marathon Oil Company · Inventors: Lowe, George E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A composition for use as a road base or levee fill. The composition comprises catalytic cracking catalyst particles in the size range of 1 to 200 microns and a binder the type and amount of which depend on the end use. Hydrated lime is employed as the binder in road base construction while hydrated lime portland, cement, fly ash or mixtures of fly ash and portland cement can be used in levee construction, The catalyst particles are present in amounts of 80% to 96% and the binder is present in amounts of 4% to 20%, both percentage ranges being determined according to the dry weight of the composition.
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 December 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2012.
- 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.