Protective cover for a compact disc
CA 2109902 A1 · Owner: Lotter, Halcil Robert · Inventors: Lotter, Halcil Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective cover for a compact disc comprising a protective sheet element which is attachable to either side of a compact disc for protecting the side of the compact disc from being damaged. The protective element is of a synthetic plastic material and has an annular configuration which is complementary to the configuration of the sides of a compact disc. The protective element has a layer of an adhesive substance applied to one side to allow it to be attached to a side of a compact disc. The protective cover is specifically suitable for protecting the operative upper side of a compact disc which has a layer of reflective material applied to it. In this application the protective element, …
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 November 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2015.
- 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.