Coated non-particulate detergent product having contoured surface
CA 2329618 A1 · Owner: Stone, Thomas Edward · Inventors: Stone, Thomas Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-particulate detergent product is provided. The product includes a core (10) formed by compressing a particulate material comprising a detersive surfactant and a builder. The core (10) is compressed into a tubular configuration having a polygonal cross section and a plurality of surfaces meeting to form a plurality of edges, thereby forming a contoured core (10) wherein at least one of the plurality of edges is chamfered (20). The nonparticulate detergent product further includes a coating (12) which substantially covers the contoured core (10).
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 April 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2021.
- 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.