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Expired Canadian patentCanada

Ferrocene derivatives, surfactants containing them and process for producing organic thin film

CA 1329622 C · Owner: Saji, Tetsuo · Inventors: Saji, Tetsuo

CIPO record

Overview

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Abstract From the Canadian patent

Provided are novel ferrocene derivatives represented by the general formula:, (wherein R1 and R2 are independently hydrogen a methyl, group, an ethyl group, a methoxy group or a carbomethoxy group, m is an integer of 1 to 4, n is an integer of 1 to 5 r is an integer of 11 to 18, and s is a real number of 2.0 to 70.0) or the general formula:, (wherein w is an integer of 2 to 20 and R1, R2, m, n and s, are the same as described above) by application of an, electrochemical method using the novel ferrocene derivatives or other ferrocene derivatives as micelle forming agents (surfactants), where an organic thin film of a hydrophobic organic substance can be efficiently produced.

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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1989
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329622 C
Classification (IPC)C07F17/02 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 31, 1989Patent grantedMay 17, 1994Term endedMay 17, 2011

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.