Aqueous coal slurry composition
CA 1190743 A · Owner: Kao Corporation · Inventors: Kiyonaga, Yasuhiro; Yamamura, Masaaki; Watanabe, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous coal slurry composition is provided which comprises:, (a) at least one compound selected from (a-1) a polyether polyol compound prepared by adding ethylene oxide and/or propylene oxide to an active hydrogen-containing compound, (a-2) a compound prepared by esterifying compound (a-1), (a-3) a compound prepared by phosphating sulfating, or carboxyalkylating compound (a-1) or a salt thereof (a-4), a compound prepared by crosslinking compound (a-1) with a crosslinking agent, (a-5) a compound prepared by reacting compound (a-1) with epihalohydrin and (a-6) an isocyanate- -terminated compound prepared by reacting compound (a-13 with a polyvalent isocyanate, (b) at least one surface …
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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 July 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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
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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.