Pressure-adhesive sheet materials, complementary transfer materials and methods
CA 1056655 A · Owner: Columbia Ribbon And Carbon Manufacturing Co. · Inventors: Newman, Douglas A.; Brown, Albert E.; Schlotzhauer, Allan T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pressure-adhesive correction sheets and ribbons which carry a latent adhesive layer which has a surface which is not sticky to the touch but which becomes sticky in areas subjected to applied imaging pressure. The present materials are used for the impact-removal of erroneous images from a copy sheet which, images consist of complementary transfer composition applied by means of a complementary transfer element including split, imaging ribbons carrying both said complementary transfer composition and said latent adhesive correction composition.
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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
- Granted June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
- 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.