Integral optical devices
CA 1231570 A · Owner: Corning Glass Works · Inventors: Keck, Donald B.; Sachenik, Paul A.; Borrelli, Nicholas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An integral optical imaging device is disclosed in which two or more porous glass bodies, embodying arrays of cylindrical gradient index lens systems are rigidly, maintained in a stacked relationship such that the lens systems are in register. This enhances the accumulative lens power and effective thickness of the device.
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 January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
- 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.