Patent Yard Sign in
Expired Canadian patentCanada

Apparatus for modification of corneal refractive properties

CA 1284677 C · Owner: Bmb Patent Holding Corporation · Inventors: Belgorod, Barry M.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

1228-001, UNITED STATES PATENT APPLICATION FOR, APPARATUS FOR, MODIFICATION OF CORNEAL REFRACTIVE PROPERTIES BY, BARRY MILES BELGOROD, M.D. ABSTRACT OF THE INVENTION A method and apparatus for modifying corneal refractive properties includes a laser source computer, control, and a plurality of deflectors including at least one rotating and translating deflector. A beam emitted from the laser source is deflected by the rotating and translating deflector in a controlled manner such that the beam strikes the cornea tangentially, ablating or lathing the contacted surface. The apparatus is computer controlled to intra-operatively determine the visual axis monitor fixation, monitor changing …

Read the whole patent

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 June 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 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.
FiledMay 20, 1987
GrantedJune 4, 1991
Term endedJune 4, 2008
Patent numberCA 1284677 C
Classification (IPC)A61F9/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 20, 1987Patent grantedJune 4, 1991Term endedJune 4, 2008

Sources & verification

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