Composite baseball bat
CA 2082173 A1 · Owner: Baum, Charles S. · Inventors: Baum, Charles S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wood composite baseball ball (10) is formed by overlaying a central core (20) of foamed plastic or extruded aluminum with an inner layer of resin-impregnated fiber knitted or woven cloth (27) and then an outer layer consisting of longitudinally extending planks of resin-coated wood veneer (20). The article is formed by covering the core with the synthetic material impregnated with uncured resin. While the resin impregnating the fibrous material is still unset, the core member is placed within split molds (34 36), lines with resin-coated strips of wood veneer (20) and the molds are pressed together while the resin is allowed to set to form a unitary 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 May 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2013.
- 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.