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Expired Canadian patentCanada

Microscopic slide with discontinuous film of plurality of microfine dyestuff droplets

CA 1069389 A · Owner: Boehringer Mannheim G.M.B.H. · Inventors: Macho, Heinz; Lange, Hans; Berger, Dieter

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 process and apparatus are provided for the largescale production of pre-coated microscope slides wherein a dyestuff, is sprayed onto the microscope slide and dried thereon: the process and apparatus permit the simple production of precoated slides of constant quality.

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069389 A
Classification (IPC)B05D1/02 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

Sources & verification

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