Patents Assigned to Nishihara Environmental Sanitation Research Corporation Ltd.
  • Method and apparatus for measuring density of suspension
    Patent number: 4002053
    Abstract: Disclosed are a method and apparatus for measuring the density of a suspeon wherein the suspension to be measured is first subjected to pressurization or depressurization in a closed container by means of a compressor or a vacuum pump to extinguish air bubbles and gas bubbles which would otherwise cause measurement error, and the measurement of the density of the suspension is then achieved with high exactitude in a bubble free state.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: January 11, 1977
    Assignee: Nishihara Environmental Sanitation Research Corporation Ltd.
    Inventor: Noboru Hayakawa