Amphiphilic high polymer and process for producing the same
CA 1290490 C · Owner: Awaji, Hiroshi · Inventors: Awaji, Hiroshi; Uekita, Masakazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An amphiphilic high polymer comprises a linear recurring unit containing at least divalent organic group (R1) having at least two carbon atoms at least, divalent organic group (R2) having at least two carbon atoms, and at least one C10-30 hydrocarbon-containing group (R3) which may have one or more substituent groups said organic groups R1 and R2 being connected to each other by a divalent connecting group, and said hydrocarbon-containing group R3 being boned to said recurring unit by a covalent bond, and the method for producing the same comprises polycondensating a combination of monomers containing R1 and R2.
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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.