2-acylated dihydro-1,3-dioxepins, process for the production thereof and use thereof as photo- initiators
CA 1196649 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Rudolph, Hans; Heine, Hans-Georg; Bendszus, Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2-ACYLATED DIHYDRO-1,3-DIOXEPINS, PROCESS FOR THE PRODUCTION THEREOF AND USE THEREOF AS PHOTOINITIATORS Abstract of the Disclosure, 2-Acylated dihydro-1,3-dioxepins proved to be highly reactive photoinitiators having a low tendency towards yellowing.
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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 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2002.
- 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
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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.