Tuning fork vibration-type viscosity measuring apparatus
CA 1282252 C · Owner: Suzuki, Osamu · Inventors: Ishiwata, Syousuke; Hayashi, Mitsuroh; Suzuki, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vibration-type viscosity measuring apparatus having a pair of vibrator subassemblies that can be resonated as a tuning fork. Each of said pair of vibrator subassemblies constituting a tuning fork has at the free end a sensor plate comprising a thin metal plate to be inserted into a sample, a detector is provided for detecting electrically the amplitude of said vibrator subassemblies that will be driven together with said sensor plates at the same frequency in reverse phase relation to each other, which amplitude will be changed due to the viscosity resistance of said sample encountered by said sensor plates and, a thermometer probe is provided at the intermediate point between said sensor …
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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 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2008.
- 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.