Industrial part heater
CA 2218832 A1 · Owner: Schwarzkopf, Eugen · Inventors: Schwarzkopf, Eugen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric part heater has a main body of highly heat-conductive material, an electrical heater element imbedded in the body, a jacket of poorly heat-conductive material surrounding the body, and a thermostat element imbedded in the body and having a measuring point. A secondary body of poorly heat-conductive material is imbedded in the main body and surrounds the measuring point so that a response of the measuring point to temperature change of the main body is mediated by the secondary body.
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 October 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2019.
- 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.