Permanent fogging system for gas mains
CA 2018668 C · Owner: Ablestik Laboratories · Inventors: Baldwin, Terrence R.; Price, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A permanent fogging system comprising a selected amount of a reactive free-radical polymerizable acrylic or substituted acrylic monomer a low, molecular weight glycol carrier and an effective amount of a free radical initiator. Another embodiment involves a method of sealing a pipeline by spraying or applying the fogging or misting system described above.
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 11, 1990 and granted September 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2012.
- 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.