Photopolymerizable composition
CA 1308852 C · Owner: Kawabata, Masami · Inventors: Takimoto, Yasuyuki; Harada, Masahiko; Kawabata, Masami
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directed to a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (A) a particular xanthene, coumarin or merocyanine dyestuff (B) a, diaryliodonium salt and (C) a compound having the formula; (R)n - D - CH2 - E V, The composition is suitable for use in various scanning exposure apparatus. For example, apparatus employed for directly writing on a lithographic printing plate a, resist of a print circuit and a mather plate of a hologram.
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 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.