High stretch elastomeric pre-stretched tubes
CA 2082932 A1 · Owner: Yau, Steven Dongchen · Inventors: Yau, Steven Dongchen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Elastomeric low modulus pre-stretched tubular articles supported by removable cores. Embodiments of the articles include those useful for insulators on power cables, and for dielectric stress control of cable splices and terminations. A conductive article is useful for shielding high voltage cables. The articles have low Shore A hardness values and low moduli which allow large expansion ratios and increased wall thicknesses when compared to conventional pre-stretched tubes.
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 April 9, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2013.
- 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.