Expired Canadian patentCanada
Environmental control unit and method
CA 1136298 A · Owner: Vaportek, Inc. · Inventors: Bryson, John D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A central source of odor neutralizing vapor fed into a floating or partially suspended distribution network is used to control odors from the surface of odiferous ponds having large surface areas.
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
- Granted November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 18, 1980
GrantedNovember 23, 1982
Term endedNovember 23, 1999
Patent numberCA 1136298 A
Classification (IPC)C02F1/50 +1 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.