Tube having filter therein for use in the casting of metals
CA 1304561 C · Owner: Neu, Max Gerhard · Inventors: Neu, Max Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tube of refractory material for use in the casting of molten metals has a filter located on one or more ledges at or adjacent the base of the tube and held in position by one or more projections on the inner surface of the tube or on the lateral surface of the filter. The filter may be a honeycomb type of structure having cells which extend from one face to an opposite face or, a structure having interconnecting cells such as a ceramic foam. In use the tube is inserted in a mould sprue which communicates directly with the mould cavity.
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 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.