Method of producing glass compositions for optical wave guides
CA 1084534 A · Owner: Her Majesty The Queen, In Right Of Canada, As Represented By The Ministe R Of Communications · Inventors: Kato, Daisuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Glass compositions suitable for optical waveguides which have the structural characteristics of O-H content type glass consist of a glass-composing oxide compound containing O-D groups. The glass compound consists primarily of one or more of the compounds SiO2 B2O3, GeO2, P2O5, SnO2, TiO2, Al2O3 and ZrO2 and the O-D groups. This O-D content glass may be produced in a chemical vapor deposition,process by a hydrolysis reaction of D2O with one or more aprotic compound of glass-composing-atoms or, by the oxidation reaction of one or more deuterium compounds of glass-composing-atoms.
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 August 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 1997.
- 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.