Expired Canadian patentCanada
Improved sealant for sample holder
CA 2176673 C · Owner: O'Bear, Raymond E. · Inventors: Chen, Patrick K.; O'Bear, Raymond E.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved sealant for a biocard or other sample holder is provided. The sealant achieves low weight good, tensile strength, and high oxygen permeability while avoiding excessive fluid evaporation, speeding incubation times.
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 May 15, 1996 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 15, 1996
GrantedFebruary 23, 1999
Term endedMay 15, 2016
Patent numberCA 2176673 C
Classification (IPC)C12M1/20 +2 more
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.