Improvements in fabric seams
CA 2272774 A1 · Owner: Sayers, Ian Christison · Inventors: Sayers, Ian Christison; Patel, Sanjay; Crook, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a sem for e.g. papermachine clothing interdigitating seaming loops, (13, 14) embrace deformable yarns (17) inserted between the last cross-machine direction yarns (15a) and the opposed seaming loops (14 13). Alternatively, an insert may be in the form of a ladder-like member (30) comprising one or more cross-machine direction members (31 32, 33) and, a multiplicity of machine direction members (34) extending beyond the members (31, 32, 33) to locate the seaming loops. Also possible is the use of a strip or tape of foamed or foamable material.
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 May 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2021.
- 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.