Pressure vessel sight glasses
CA 1307130 C · Owner: Weber, Gerhard · Inventors: Dislich, Helmut; Hinz, Paul; Weber, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure vessel sight glass especially a tempered, glass, is protected against the corrosive attack of normally alkaline, boiler feed water heated up to 300°C by providing, the sight glass with a metallic oxide coating consisting essentially of SnO2, optionally combined with Cr2O3. The coating is preferably applied as a sprayed solution of soluble salt convertible to the oxide.
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 September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 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.