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Expired Canadian patentCanada

Brush-like writing instrument

CA 1291966 C · Owner: Konose, Yoshiomi · Inventors: Sakurai, Kiyokazu; Konose, Yoshiomi

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A brush-like writing instrument is improved in its writing reeling and in its anti-drying property of ink in that a hair of a brush point of the writing instrument is covered by a sleeve-like member for mounting the brush point to provide a clearance between two surfaces one of which is an outer peripheral surface of the brush point covered by the sleeve-like member and the other of which two surfaces is an inner peripheral surfaces of the sleevelike member, so that the brush point is held bendable also within the sleeve-like member while held bendable outside the sleeve-like member, i.e. so that the brush point is held bendable substantially in its whole length inside and outside 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 November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 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.
FiledJanuary 6, 1986
GrantedNovember 12, 1991
Term endedNovember 12, 2008
Patent numberCA 1291966 C
Classification (IPC)A46B3/06 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 6, 1986Patent grantedNov 12, 1991Term endedNov 12, 2008

Sources & verification

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