Method for controlling fouling deposit formation in petroleum hydrocarbons or petrochemicals
CA 1303540 C · Owner: Forester, David R. · Inventors: Forester, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for controlling the formation of fouling deposits in petroleum hydrocarbons or petrochemicals during processing at elevated temperatures are disclosed. The methods comprise adding from about 0.5-10,000 ppm of an amine salt of polyalkenylthiophosphonic acid to the desired petrochemical or hydrocarbon.
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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.