Method for blow molding tubular container
CA 2127697 C · Owner: Takakusaki, Nobuyuki · Inventors: Terajima, Yoshimi; Takakusaki, Nobuyuki; Takeda, Isamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for blow molding a tubular container comprising the steps of blowing blow air into a parison to shape a tubular container (3), forming discharging ports (32) in that part of an unnecessary portion of a wall surface of the tubular container located opposite to a blow-in port (33) for blow air and continuing to supply , blow air so as to shorten cooling time for a molded piece after blow molding and to efficiently mold molded pieces superior in dimensional accuracy.
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
- Filed November 18, 1992 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2014.
- 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.