Patent Yard Sign in
Expired Canadian patentCanada

Method of treating water to inhibit corrosion and diminish mineral deposition

CA 1239069 A · Owner: Dow Corning Corporation · Inventors: Homan, Gary R.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Abstract, What is disclosed is a method for treating water to inhibit corrosion and diminish mineral deposition using certain cat ionic sullenness in a neutral or basic pi environment. An example of the method is the use of (CH30)3Si(CH2)3?(CH3)2C18H37C1? in a humidifier unit

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 July 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2005.
  • 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 30, 1985
GrantedJuly 12, 1988
Term endedJuly 12, 2005
Patent numberCA 1239069 A
Classification (IPC)C02F5/12 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedApril 30, 1985Patent grantedJuly 12, 1988Term endedJuly 12, 2005

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.