Substrate for analyzing hydrophilic substances having low molecular weight
CA 1191827 A · Owner: Kureha Kagaku Kogyo Kabushiki Kaisha · Inventors: Arakawa, Noriyuki; Sakagami, Teruo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE OF THE INVENTION:, A SUBSTRATE FOR ANALYZING HYDROPHILIC SUBSTANCES HAVING LOW MOLECULAR WEIGHT, ABSTRACT OF THE DISCLOSURE: A porous substrate for analyzing hydrophilic substances having low molecular weight, comprising a cross-linked copolymer having methylol groups, the copolymer being made of a monomer of styrene-series and a cross-linking agent copolymerizable with the monomer, the outer surface thereof being hydrophilic and the inner surface of pores thereof being hydrophobic is prepared by sub-, jecting a mixture of the monomer and the cross-linking agent to suspension polymerization in water in the presence of a pore regulator and a water-soluble polymer and providing the …
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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 August 13, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2002.
- 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.