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Expired Canadian patentCanada

Contact lens cleaning device

CA 1287968 C · Owner: Pompe, Larry W. · Inventors: Pompe, Larry W.

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

An appliance for cleaning hard or soft contact lenses as, well as other delicate optical objects. A frame carrying a cleaning pad or cloth is mounted in a base. The frame has an access opening that is covered by the pad. The pad overlaps the edges of the frame defining the access opening. The base has a mounting opening corresponding in size and shape to the shape of the frame such that the frame can be installed in the opening of the base with the edges of the pad lodged between the frame and the base and the portion of the pad covering the access opening exposed and accessible by the user. Cleaning solution is applied to the accessible portion of the pad and the contact lens rubbed upon …

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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 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 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.
FiledMarch 7, 1988
GrantedAugust 27, 1991
Term endedAugust 27, 2008
Patent numberCA 1287968 C
Classification (IPC)B08B1/00 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 7, 1988Patent grantedAug 27, 1991Term endedAug 27, 2008

Sources & verification

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