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Expired Canadian patentCanada

Axially centering apparatus for fusion-bonding optical fibers

CA 1305852 C · Owner: Kajitani, Shuji · Inventors: Tsuchida, Yoshio; Kajitani, Shuji; Takahashi, Tomoki

CIPO record

Overview

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

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Abstract From the Canadian patent

An axially centering apparatus for fusion-bonding optical fibers comprising a pair of guides having long grooves on the upper surfaces thereof for engaging optical fibers, a pair of fulcra formed in parallel with the long grooves of the guides for supporting the guides, a pair of centering stands having substrates for supporting the fulcra, a pair of centering mechanisms having load imparting mechanism sections having telescopic output ends, load imparting mechanism sections, and transmitting mechanism sections for the adjusting mechanism sections so that the long grooves of said centering stands are disposed adjacently to each other to align in a rectilinear line said, centering mechanisms …

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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 26, 1987
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1305852 C
Classification (IPC)G02B6/38 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 26, 1987Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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