Surface modified plastic blood collection tubes
CA 2099097 C · Owner: Becton, Dickinson And Company · Inventors: Vogler, Erwin A.; Harper, Garry R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A glass or plastic article, preferably a blood collection tube, has two or more surface regions of different surface chemistry. One region is substantially glass-like and another region is substantially plastic-like. If the tube is glass a, region of the tube adjacent the tube bottom is plastic-like. If the tube is plastic, a region of the tube adjacent the mouth of the tube is be glass-like.
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 June 23, 1993 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 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.