Amyl alcohol and acetic acid to reduce odor of sewage sludge
CA 1090259 A · Owner: Walker, H. Gordon · Inventors: Cox James P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For the purpose of controlling odor a slurry, of digested sewage sludge to be sprayed on land for restoring its fertility is mixed with a deodorant composition containing a mixture of glacial acetic acid and amyl alcohol and optionally one or more other component including 2,3-butanedione, sulfuric acid benzaldehyde and copper sulfate.
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 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
- 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.