Ring laser
CA 1309155 C · Owner: Ross, Iain E. · Inventors: Mcnaught, William G.; Ross, Iain E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Edin 643/DNB, ABSTRACT, RING LASER, A ring laser comprises a block (10) of dielectric material in which are formed a number of passages (11) defining a closed polygonal path. A gaseous active medium which are closed by mirrors (12). Two electrodes (16) are arranged external to the passage parallel to and on opposite sides of part or all of at least one of the passages (11). In operation the electrodes (10) are capacitively coupled to the gaseous active medium to produce an electric discharge therein transverse to the direction of the passage by the application to electrodes (16) of a high-frequency alternating voltage.
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 October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 2009.
- 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.