Ball
CA 2562233 C · Owner: Ishii, Sadahiro · Inventors: Fujisawa, Michinori; Saeki, Taketoshi; Ishii, Sadahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a gas filling-type ball for sports which has excellent non-slip property and sufficient mechanical strength such as surface abrasion resistance, and which can be particularly suitably used in a field of a , material for a ball such as a basketball American football, or rugby ball. , The present invention relates to a ball used for any one of basketball handball, rugby , ball, and American football comprising a sheet having formed thereon a cover layer including substantially continuous pebbles and hemispherical valleys adjoining the pebbles formed on a surface of a base fabric in which: a height , difference between the pebbles and the valleys is 50 to …
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 1, 2005 and granted July 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 1, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.