Anionic microporous resin of hypocholesterolemising action
CA 1104775 A · Owner: Spem.S.A.-Specialita Medicinali S.P.A. · Inventors: De Simone, Renato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microporous cross-linked polystyrene matrix is prepared by polymerising styrene with 5-20% by weight of a crosslinking monomer, in the presence of 80-150% by weight of the total monomer weight of a porosity producing product or mixture of products having a steroidal spacial structure and the microporous, resin thus formed is chemically modified by introducing alkyl amino groups containing ternary and/or quaternary nitrogen atoms. There is produced a microporous hypocholesterolemising resin constituted by a cross-linked polystyrene matrix containing alkyl amino and/or alkyl ammonium groups, and of the following characteristics:, - exchange capacity 309 - 6 meg/g. - porosity 0.4 - Oo6 cc/g …
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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 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 1998.
- 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.