Method and apparatus for blow molding of thermoplastic articles
CA 1112411 A · Owner: Rheem International, Inc. · Inventors: Trieschock, George E.; Dunbeker, George H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A mixture of water and surfactant is introduced interiorly of a parison in the course of blow molding thereof Lessen-, ing of die closure time and improved conformity of dimensions of molded articles to corresponding dimensions of forming dies are achieved.
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 November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 1998.
- 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.