Disposable pattern, composition for making same and method of investment casting
CA 1058347 A · Owner: Yates Manufacturing Co. · Inventors: Martin, Tom O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable pattern material for investment casting processes incorporating 4,4'-Isopropylidene Diphenol (commonly referred to as Bisphenol-A) and a thermoplastic material; and an investment casting process utilizing a disposable pattern material incorporating 4,4'-Isopropylidene iiphenol.
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 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
- 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.