Flow regulator
CA 2098173 C · Owner: Arrow Interventional, Inc. · Inventors: Olive, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow regulator (10) placed in a fluid path to passively compensate for variations in fluid pressure by deflection or movement. In one embodiment a silicon micromachined housing (11) has a damper beam (20) cantilevered to the interior wall (24) between inlet (16) and outlet (18). Deflections of the beam vary the volume of the restrictive flow gap (26) formed between the underside (19) of the damper plate (22) and the internal wall (21) of the housing (11) adjacent the outlet (18). In another embodiment the flow , restrictor element (68) is a floating element in the housing (60) and has conformal side walls (74) with the interior of the housing walls (72). The flow regulator elements (30 …
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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
- Filed November 22, 1991 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2013.
- 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.