Additive for binding liquid waste
CA 2088006 C · Owner: Raymond, Marvin L. · Inventors: Raymond, Marvin L.; Barrett, Dana G.; Greene, Phillip B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A litter composition including a particulate liquid absorbent material and a particulate polymer having a hydroxyl group content sufficient to enable the litter composition to agglomerate into a mass upon contact with liquid waste to facilitate removal of the liquid waste from a container containing the litter composition. The litter composition further includes a boron compound to accelerate hardening of the mass.
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 January 25, 1993 and granted May 31, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 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.