Ink-jet recording sheet
CA 2277755 A1 · Owner: Iqbal, Mohammed · Inventors: Iqbal, Mohammed; Tweeten, David W.; Farooq, Omar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ink-receptive compositions of the invention contain: a) at least one nonionic silicone surfactant having formula (I) or the formula: (CH3Si)y- 2(OSi(CH3)2)x/yO-PE, wherein x is an integer from 40 to 200 and y is an , integer from 3 to 15, and PE represents the formula: - CH2CH2O(CH2CH2O)m(CH2CH2CH2O)nZ, m being an integer of from 1 to 40 n having , a value of from 0 to 40 minus m and Z is hydrogen or an alkyl radical having from 1 to 10 carbons atoms; and b) at least one polymer selected from the group consisting of hydroxycellulose and substituted hydroxycellulose polymers, such composition being cross-linkable when coated onto a substrate and subjected to temperatures of at least 90 …
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 January 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2020.
- 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.