Interlayer for laminated glass
CA 2071608 A1 · Owner: Murashima, Masatoshi · Inventors: Kato, Keita; Murashima, Masatoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interlayer for laminated glass is disclosed. The interlayer comprises a sheet or film of thermoplastic resin at least one surface of which has many microscopic projections having a load curve obtained by measuring the surface roughness of the sheet or film with a surface roughness meter wherein the relative load length at a cutting level of 50% in any direction on the sheet or film is characteristically 20-50% of the measured length. In another embodiment an interlayer for laminated glass the, interlayer comprising a sheet or film of thermoplastic resin at least one surface of which has many microscopic projections having, a load curve obtained by measuring the surface roughness of said …
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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 June 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.