Oil absorbent material
CA 2004679 A1 · Owner: Smith, Linda K. B. · Inventors: Smith, Linda K. B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The laminated mat of the present invention is suitable for protecting a surface from liquid spills. The mat includes a means for retaining the spills within the laminated mat; a means for channelling the spills throughout the laminated mat; and a means for absorbing the channeled spills. The retained means comprises a sheet of nonporous plastic material. The nonporous sheet is preferably a cushioning, bubble-pack of polyeyhelene and nylon. The channeling means is the bumpy bubble-pack surface. The absorbing means comprises an absorbent sheet which absorbs the liquid spills that are retained on the nonporous sheet. The nonporous sheet is adhered to the absorbent sheet by a heat bonding …
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 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2011.
- 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.