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Expired Canadian patentCanada

Delivery system for high-energy pulsed ultraviolet laser light

CA 1263450 C · Owner: Goldenberg, Tsvi · Inventors: Goldenberg, Tsvi

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

The density of the energy that is conducted within a fiber-optic waveguide is increased by means of an energy coupler at the input end of the optical fiber. This energy coupler comprises a fused or ground lens at the input end of a silica-based fiber. A second lens, preferably a plano-convex lens focusses a, large collimated laser beam to a point source. The lens at the end of the fiber is located at a distance greater than the focal length of the second lens so as, to receive light from the point source and couple it into the fiber.

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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 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 6, 1985
GrantedNovember 28, 1989
Term endedNovember 28, 2006
Patent numberCA 1263450 C
Classification (IPC)G02B6/06 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedDec 6, 1985Patent grantedNov 28, 1989Term endedNov 28, 2006

Sources & verification

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