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| Number | Title | Issue Date |
| 4066394 | Reusable zeolite water softener for clothes washing Washing of clothes is effected in the presence of an insoluble substrate having bonded thereto an insoluble inorganic cation-exchanger.... | 01/03/1978 |
| 4060465 | Method of purifying the raw brine used in alkali salt electrolysis A method of purifying the raw brine used in the electrolysis of the aqueous NaCl or KCl solution by removing the Mg and Ca ions from said brine, which comprises contacting said brine with a member selected from the group consisting of A. the chelate-formi... | 11/29/1977 |
| 4040972 | Ion-exchanging aluminum silicate with hydrophilic surfaces There are provided alkali aluminum silicates having a hydrophilic surface. They are prepared by mixing a crystalline, ion-exchanging alkali aluminum silicate with a hydrophilic material, preferably ortho-phosphoric acid or an alkali ortho phosphate.... | 08/09/1977 |
| 4029576 | System for softening water A system for reducing the hardness of raw water to a level where it is suitable for circulation to a boiler wherein the water is converted to steam for generating power and subsequent use in equipment for building tires. The system employs, (i) a sediment... | 06/14/1977 |
| 4025427 | Reusable water softener system for clothes washer A water softening system utilizing a reusable, self-contained water softener device for an agitator type clothes washer. The water softener device includes a quantity of cation exchange resin contained in a torus shaped jacket formed of a closely woven po... | 05/24/1977 |
| 3994830 | Process for the production of adsorbents of nitrohumic acid series with an improved alkali-resistance An adsorbent of nitrohumic acid series with an improved alkali-resistance is prepared by insolubilizing calcium nitrohumate, kneading the insolubilized product with a water-soluble polyacrylamide in the presence of water, shaping the mixture into a desire... | 11/30/1976 |
| 3977968 | Ion exchange regeneration An improvement in closed cycle regeneration of sodium zeolite water softeners using sodium chloride soft brine input which comprises correlating the volume of liquid through the zeolite softener column so that in the effluent the alkaline earth metal cont... | 08/31/1976 |
