Tubular container and packages for the same
CA 2075758 A1 · Owner: Tsao, Chien-Hua · Inventors: Tsao, Chien-Hua; Tsao, Chien-Hua
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Tubular Container and Packages for the Same A tubular container and its packages, including a tubule filled with a desired liquid in an appropriate volume and having a first open end wrapped with or connected to a soft absorbent, a second open end sealed by a detachable sealing element in a manner that the surface tension of the liquid in the tubule must be lower than the atmospheric pressure so that the liquid will not flow out before the sealing element is detached. Fig. 1
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 August 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2014.
- 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.