Internally bonded sewing threads and processes for production thereof
CA 2115064 C · Owner: Gailey, Robert M. · Inventors: Suttle, Attiens E.; Sperling, Philip E.; Bathie, Leslie A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to internally bonded sewing threads and to processes for the production of the internally bonding sewing threads. The internally bonding sewing threads of the inventon include three multifilament yarns (10) wrapped helically about a thermoplastic bonding core yarn (12). Processes of the invention include an improved process for preparing a precursor plied thread (5) which is thereafter thermally treated to provide the internally bonded sewing thread (5'). In addition the inven-, tion provides batch and continuous processes for converting the precursor plied thread (5) into internally bonded sewing thread (5').
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 5, 1992 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 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.