Differential pressure capillary viscometer
CA 1324002 C · Owner: Yau, Wallace Wen-Chuan · Inventors: Yau, Wallace Wen-Chuan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved differential pressure capillary viscometer in which a sample of solute in solution with a solvent is introduced into a stream of flowing solvent. The sample passes sequentially into first and second capillary tubes in which pressure differences are measured as a function of time. The pressure differences can be related to the viscosity of the sample.
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, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.