Patent · US Expired

Needle-type colloid osmometer

US4245495A · kind A · utility

20Cited by
1References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 15, 1978
Grant dateJan 20, 1981
Priority date
Expiry dateSep 15, 1998

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N33/487
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A needle-type colloid osmometer is disclosed. This osmometer comprises a hollow needle body having at least one hole at its outer wall and acting as a part of a pressure sensing chamber, a cylindrical semipermeable membrane fitting the needle body therein, and a sampling chamber receiving the needle body with the membrane. The osmometer is usable for measuring colloid osmotic pressure of blood, lymph, body fluid or the like in the fields of clinical pathology, physiology, biochemistry, biology and the like.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.