Transparent liquid absorbent materials for use as ink-receptive layers
CA 2052129 C · Owner: Iqbal, Mohammad · Inventors: Iqbal, Mohammad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a recording sheet more, particularly, a transparent recording sheet suitable for use with ink-jet printers. Transparencies for use with overhead projectors can be produced by imagewise deposition of liquid ink of various colors onto thin, flexible transparent, polymeric sheets. In the case of imaging onto polymeric film some means of absorbing aqueous liquids is needed if satisfactory drying of the image is to occur. Because simple polymeric systems are generally either limited in absorbency or in structural integrity, compositions useful as transparent liquid absorbent materials have been formed by blending a liquid-insoluble or low absorbent material with a …
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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 September 24, 1991 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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.