Needle sheath
CA 2088534 C · Owner: Steinman, Christopher Paul · Inventors: Erskine, Timothy Joseph; Steinman, Christopher Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A needle shielding device in which, after use a, needle is confined in a chamber having a first hole through which the needle can enter the chamber. The needle is drawn into the chamber through the hole. The chamber is made up of telescopic members. The needle strikes the rear wall of the chamber causing the telescopic members to telescope apart. Once in the chamber, the needle will not readily escape through the first hole.
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 February 1, 1993 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2015.
- 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.