Universal cleaning and polishing pad
CA 2413780 A1 · Owner: Bishop, Deforest · Inventors: Bishop, Deforest
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning and polishing pad (10) including densely packed fibrillated face yarns (14, 15) on one side and an opposite polishing side which alternatively , may be a resilient textured surface, or an open-celled sponge (22). The pad is constructed of all synthetic materials using conventional carpet manufacturing techniques. Synthetic fibrillated face yarns are tufted into a primary back (16) which may be a woven polypropylene product scrim, sponge or , other sheet material. The face yarns include yarns of at least two deniers tightly packed, to provide both a soft and hard bristle face with the yarns cooperating to produce a non-abrasive scrubbing pad. Optionally a secondary , …
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 May 26, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2022.
- 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.