Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-07-22
1977-02-08
Spear, Jr., Frank A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210504, 210505, B01D 1300
Patent
active
040071138
ABSTRACT:
Improved filter media comprised of negatively charged high surface area particulate filter material the surface of which is modified with a melamine-formaldehyde cationic colloid; processes for the preparation thereof; and use in liquid filtration to remove submicron contaminants including negatively charged particles.
REFERENCES:
patent: 3158532 (1964-11-01), Pall et al.
patent: 3238056 (1966-03-01), Pall et al.
AMF Incorporated
Price George W.
Spear, Jr. Frank A.
Worth Charles J.
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