Adjustable flow syringe
CA 2306480 A1 · Owner: Fischer, Dan E. · Inventors: Fischer, Dan E.; Hyink, Doug; Rachal, Richard N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adjustable flow syringe (10) is provided that comprises a slidable plunger (14) within a barrel (12). The barrel (12) has a flow discharge end (20) wherein a neck (28) is located. The neck (28) has a conduit (30) extending therethrough which has an outlet and a inlet such that the conduit (30) is in fluid communication with the barrel (12). The adjustable flow syringe (10) includes either a valve insert (46) or a porous insert (94 Fig. 6) in the , conduit (30) which is configured to adjust the flow rate of a fluid leaving the syringe (10) such that a low amount of manually applied force delivers the fluid in drops. The valve insert (46) is formed from a resilient material and …
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
- Filed October 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2020.
- 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.