Cooling method for use in connection with stretch blow molding
CA 2234126 A1 · Owner: The Boc Group, Inc. · Inventors: Lee, Ron C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of cooling an article within a heated mold of a stretch blow molding apparatus. In accordance with the method a cryogenic liquid refrigerant is mixed with a vapor to produce a cooling fluid. The cooling fluid is introduced into the article. The refrigerant and vapor are mixed such that the cooling fluid assumes a two phase flow no later than upon its introduction into the article. The vapor flow rate is controlled and therefore the specific cooling potential of the cooling fluid is also regulated so that the article is heat set in an accurate and controlled manner that is reproducible.
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 April 1, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2020.
- 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.