Solvent for chromogenic dye-precursor material for pressure-sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent
CA 1255101 A · Owner: Kureha Kagaku Kogyo Kabushiki Kaisha · Inventors: Ohhira, Youichi; Nakamura, Tadashi; Okada, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE OF THE INVENTION:, SOLVENT FOR CHROMOGENIC DYE-PRECURSOR MATERIAL FOR PRESSURE-SENSITIVE RECORDING PAPER SHEET AND PRESSURE-SENSITIVE RECORDING PAPER SHEET PREPARED BY USING THE SOLVENT, ABSTRACT OF THE DISCLOSURE: A solvent for chromogenic dye-precursor material for pressure-sensitive recording paper sheet comprising 50 to, 80 % by weight of p-monoisopropylbiphenyl and 50 to 20 % by weight of hydrogenated terphenyl, and a pressure-sensitive recording paper sheet prepared by using the solvent. - 1 -
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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 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 2006.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.