Capillary thermometer containing visible silicone fluid
CA 1135071 A · Owner: Dow Corning Corporation · Inventors: Jones, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expanding-fluid thermometer of the capillary type is provided wherein the expanding fluid is a silicone fluid containing a coloring amount of 1,4-bis(alkylamino)-9,10anthraquinone. The thermometer of this invention is useful over a wide temperature range and does not release toxic materials when broken. It thus has particular utility as a cooking thermometer.
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 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
- 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.