Scanning electron microscope sample cooling device
CA 1185106 A · Owner: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence · Inventors: Fong, Wing C.; Fournier, Albert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooling device for use with a cryogenic cooling system to maintain a sample at cryogenic temperatures inside the vacuum chamber of a scanning electron microscope during observation is described. The cooling device is made of a thermally conductive material and has a recess for mounting a sample holder, and a passage extending around the recess. A pair of flexible hoses are connected to opposite ends of the cooling device for permitting liquid nitrogen to flow through the passage. By removing heat from the sample sample holder, and cooling device the liquid nitrogen vapourises and the vapour pressure produced causes vapour to flow out of the device and through one of the flexible hoses to …
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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 April 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2002.
- 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.