Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Surface tension
Reexamination Certificate
2008-03-18
2008-03-18
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Surface tension
Reexamination Certificate
active
11167252
ABSTRACT:
The present invention is directed to a method and a device for forming an interface between a first and a second essentially immiscible liquid, especially for the measurement of the surface tension at said interface. According to the invention, a volume of the first liquid is added to a first well having a closed bottom, walls and an upper opening in a horizontal surface. A volume of the second liquid is added to a second well, e.g. in the form of a bore or a sleeve having an upper well opening and a lower well opening which lower well opening rests in a sealing relationship on the said horizontal surface, the said surface closing the lower opening, but in sliding engagement therewith. The lower opening of the second well is brought into alignment with the upper opening of the first well, thus depositing the volume of the second liquid on top of the surface of the volume of the first liquid, to form the desired liquid-liquid interface.
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patent: 2006/0275184 (2006-12-01), Furukawa et al.
patent: 2265222 (1993-09-01), None
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Armstrong Kratz Quintos Hanson & Brooks, LLP
Fitzgerald John
Williams Hezron
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