Alkali zinc aluminophosphate glass-ceramics
CA 1333072 C · Owner: Corning Glass Works · Inventors: Pierson, Joseph Eugene; Quinn, Candace Jo; Beall, George Halsey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to the production of glass-ceramic articles exhibiting an apparent annealing point in excess of 400°C and excellent resistance to moisture attack, the articles consisting essentially in, mole percent, of:, Li2O 5-25 ZnO 35-50 Na2O 0-15 Al2O3 0.75-6, K2O 0-10 P2O5 29-37 Li2O+Na2O+K2O 5-25
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
- Granted November 15, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 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.