Frequency conversion device and process for producing the same
CA 2086216 A1 · Owner: Hoechst Aktiengesellschaft · Inventors: Johnson, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The fiber type frequency conversion element of the present invention is composed of a core comprising an organic nonlinear optical material and a clad comprising polymeric organic material. The organic nonlinear optical material preferably has a melting point of from 70 to 200°C, and the high polymeric organic material has a melting point which is higher than that of the nonlinear optical material by at least 20°C.
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 December 23, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2014.
- 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.