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Expired Canadian patentCanada

Multi-photon irradiative creation of three-dimensional patterned products

CA 1080849 A · Owner: Formigraphic Engine Corporation · Inventors: Kramer, Stephen D.; Swainson, Wyn K.

CIPO record

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

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Abstract From the Canadian patent

Patterned inhomogeneities of physio-chemical behavior are generated within volumes of material by controlled placement of simultaneous and sequential multiphoton absorption. The inhomogeneities are useful in production of variable refractive index optical components three-dimen-, sional photo-resist fabrication and in the operation of, quantum computer storage and retrieval in three-dimensional computer memory systems.

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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 July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 1, 1980
Term endedJuly 1, 1997
Patent numberCA 1080849 A
Classification (IPC)G11C13/04

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJuly 1, 1980Term endedJuly 1, 1997

Sources & verification

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