Expired Canadian patentCanada
Dust suppression methods and compositions
CA 1314705 C · Owner: Roe, Donald C. · Inventors: Roe, Donald C.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Minor amounts of water insoluble elastomeric polymers are combined with oil. The combination is sprayed or applied in a foam carrier to dust particles to inhibit dissemination thereof which would otherwise occur by windage or transit motion and the like.
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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
- Granted March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 1988
GrantedMarch 23, 1993
Term endedMarch 23, 2010
Patent numberCA 1314705 C
Classification (IPC)C09K3/22
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.