Apparatus for introducing a predetermined volume of enzyme solution into the lens of an eye
CA 1092002 A · Owner: Novo Laboratories, Inc. · Inventors: Weibel, Michael K.; Spina, Joseph, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for introducing a predetermined volume of enzyme solution into the lens of an eye comprising: a) a liquid dispenser connectible to a reservoir of enzyme solution b) a source of gas, c) a multiport valve having therein at least four ports d) a cannula, said liquid dispenser, gas source and cannula being each connected to a different valve port, the fourth valve port being an exhaust port said, valve having therein two reversible channels connectible to said ports two by two with the gas source connecting to the exhaust port and the liquid dispenser port connecting to the cannula the combined volume within said cannula and the valve port connected to the cannula being …
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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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.