Animal litter compositions
CA 2075217 A1 · Owner: Floridin Company · Inventors: Yildirim, Eric K.; Rice, David W.; Howell, Walter E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Clumping animal litter compositions comprising particulate attapulgite clay having a moisture content in the range of from about 10 to 23 percent free moisture and a particle size distribution of from about 8 to about 40 mesh, preferably about 10 to 30 mesh. Method of production includes selection of an attapulgita clay having an API yield value of at least 80 barrels per ton and, preferably, kneading and extruding the clay milling, and heating the clay to a temperature not exceeding about 250°F. to reduce the moisture content to about 10 to 23 percent, and screening the product to a mesh size of about 8 to 40 mesh.
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 August 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 3, 2014.
- 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.