Process for preparing photohardenable elastomeric element having increased exposure latitude
CA 2128734 C · Owner: Feinberg, Bernard · Inventors: Weikart, Udo; Swatton, David William; Feinberg, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing a photohardenable elastomeric element having increased exposure latitude, said element having a support and a photohardenable layer wherein at least (a) a thermoplasticelastomeric polymeric binder comprising a copolymer of isoprene, (b) a liquid plasticizer, and (c) a petroleum wax are premixed, is described.
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 30, 1992 and granted January 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 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.