Photosensitive resin composition comprising a halogen-free colorant
CA 2507471 A1 · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Adam, Jean-Marie; Oka, Hidetaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a photosensitive resin composition comprising a) as a component (A) a green colorant of the formula (I) in which the rings A, B, C and D are substituted by hydroxy or by moiety wherein R is hydrogen , or C1,-C4.-Alkyl, R2 is hydrogen or C1,-C4-Alkyl n is 0, 1, 2 or 3 and the , ring E is unsubstituted or substituted by C1,-C6alkyl C1,C6alkoxy, hydroxy, NHCOR3,NHSO2,R4 or SO2NHR5 wherein R3, is C1,-C4,-Alkyl or phenyl R4, is C1-, C4-Alkyl or phenyl and R5 is C1,-C4-Alkyl or phenyl b) as a component (B) an , alkali soluble oligomer or polymer (reactive or unreactive) c) as a component , (C) a polymerizable monomer d) as a component (D) a photoinitiator e) as …
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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
- Filed November 19, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Sources & verification
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.