Patents Assigned to E.R.T. Environmental Research Technology K.S.P.W. Inc.
  • Liquid sorbent
    Patent number: 5331079
    Abstract: A polyurethane particulate liquid absorbent, optionally containing microspheres, and a process for its preparation. The absorbent is suitable for use in cleaning up spilled liquids ranging from mobile ones, such as gasoline, to visconsones, such as crude oil. The absorbent and absorbed liquid are readily separated by a centrifugation step, thus providing recovered liquid, and liquid-free absorbent for re-use.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 19, 1994
    Assignee: E.R.T. Environmental Research Technology K.S.P.W. Inc.
    Inventor: Zdzislaw J. Kozlowski
  • Liquid sorbent
    Patent number: 5239040
    Abstract: A polyurethane particulate liquid absorbent, optionally containing microspheres, and a process for its preparation. The absorbent is suitable for use in cleaning up spilled liquids ranging from mobile ones, such as gasoline, to visconsones, such as crude oil. The absorbent and absorbed liquid are readily separated by a centrifugation step, thus providing recovered liquid, and liquid-free absorbent for re-use.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: August 24, 1993
    Assignee: E.R.T. Environmental Research Technology K.S.P.W. Inc.
    Inventor: Zdzislaw J. Kozlowski