Reciprocal labeling of packaging envelopes
CA 1183106 A · Owner: W.R. Grace & Co.-Conn. · Inventors: Bolton, Roderick A.; Wood, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for reciprocal labeling of thermoplastic packaging bags that includes the steps of advancing a collapsed tubular polymeric film and corona treating its outer surface advancing a printed, web of indefinite length having printed along one surface thereof a regularly repetitive pattern of reverse-printed reciprocal label sets and corona treating its printed surface longitudinally slitting the, advancing web between reciprocal prints to form two reciprocal label strips, advancing the label strips oppositely alongside the advancing collapsed film such that the corona treated surfaces of the strips are adjacent opposing sides of the collapsed film respectively and adjusting …
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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 February 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 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
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.