Butt splicing tapes and butt splicing methods
CA 2422274 A1 · Owner: 3M Innovative Properties Company · Inventors: Shaw, Robert G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Butt splicing tape comprising:a splicing portion an attachment portion and a , gripping portion wherein said splicing portion comprises an elongated first backing member (10) having two faces and two longitudinal edges a first , adhesive layer (11') on the first face of said first backing member (10) said , first adhesive layer (11') extending substantially along the first longitudinal edge of said first backing member (10) and optionally being covered by a first release liner (12), and a second adhesive layer (11") on the first face of said first backing member (10) said second adhesive layer , (11") extending substantially along the second longitudinal edge of said first backing …
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 August 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2023.
- 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.