Low-dusting investment composition material
CA 2484745 A1 · Owner: Van Der Zel, Joseph Maria · Inventors: Bettman, Marijke; Grinwis, Theodorus Jacobus; Van Der Zel, Joseph Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for manufacturing a heat-resistant mold wherein heat-resistant investment material is inserted in a wax model manufactured in a conventional manner. The invention further relates to a lowdusting investment material, which low-dusting material is in particular heatresistant. The investment material is applicable in dentistry particularly , for manufacturing molds.
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 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2025.
- 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.