Universal cordage
CA 2001324 C · Owner: Dougherty, Timothy Stephen · Inventors: Dougherty, Timothy Stephen; Streich, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cordage which may be used for any of the commonly marketed lengths of retractile cords comprises an array of a plurality of conductors each insulated with a suitable plastic material. The array of conductors is enclosed in inner and outer jackets. The inner jacket comprises a polyvinyl chloride (PVC) plastic material for, example, and has a thickness of about 0.015 inch. Covering the inner jacket is an outer jacket comprising a polyvinyl chloride plastic material having a thickness of about 0.005 inch and having a colorant constituent. The PVC composition of the inner layer is such that it is a less expensive composition than that of the outer layer. Enclosing the outer jacket is a layer …
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 October 24, 1989 and granted April 19, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2011.
- 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.