Patent Yard Sign in
Expired Canadian patentCanada

Bubble detecting infusion apparatus

CA 1205543 A · Owner: Miles Laboratories, Inc. · Inventors: Kramer, Donald L.

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

Bubble detecting infusion apparatus for infusing a liquid from a source into a patient through the lumen of a light transmissive conduit member, which lumen has a flat wall surface portion contacted by the liquid in the lumen, the conduit member having an operative position within a yoke in which it is removable disposed the yoke, having a light source for directing a light beam through the conduit member wall toward the flat lumen wall surface portion thereof and having a light sensor positioned to receive light from the source reflected through the conduit member wall by the flat lumen wall surface portion, the angularity between the incident light beam and the normal to the flat lumen …

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 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 2003.
  • 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 30, 1984
GrantedJune 3, 1986
Term endedJune 3, 2003
Patent numberCA 1205543 A
Classification (IPC)G01N21/89 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMarch 30, 1984Patent grantedJune 3, 1986Term endedJune 3, 2003

Sources & verification

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