Modified process for resin manufacturing using a continuous separate distillation column
CA 1088021 A · Owner: Fiberglas Canada Limited · Inventors: Deuzeman, Henk J.; Bate, Gary W.; Coker, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Volatile reactants are heated under reflux in a reactor and form volatile reaction by-products which are continuously removed in a vapour effluent from a reflux column and partial condenser. The effluent, which entrains some of the reactants is condensed in a first total condenser and is fed to a distillation apparatus for separation of the volatile reactants and by-products and return of the separated reactants to the reactor. Before the condensate reaches the distillation apparatus it is temporarily stored in a receiver from which it is controllably fed to a pre-heater where it is evaporated and then fed as a vapour to the distillation column of the distillation apparatus for separation. …
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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 October 21, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 1997.
- 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.