US2977313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleansing, sterilizing, and preventing corrosion in base exchange and cation exchange systems and products used therein
Assignee: Hagan Chemicals and Controls Inc
•
Filing: 1956-05-22
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Granted: 1961-03-28
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Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Charles T Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:46
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/16; B; B01; B01J; B01J49/00; B01J49/60; C11D3/00; C11D3/395; C11D3/3958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF CLEANING, DISINFECTING, AND PREVENTING CORROSION IN A BED OF CATION EXCHANGE MATERIALS AND WATER SOFTENING MATERIALS APPURTENANT THERETO WHICH COMPRISES TREATING SAID MATERIALS WITH AN AQUEOUS SOLUTION OF A MIXTURE CONTAINING BY WEIGHT FROM ABOUT 70 PERCENT TO ABOUT 85 PERCENT OF A MOLECULARLY DEHYDRATED SODIUM PHOSPHATE HAVING A MOLAR RATIO OF NA2O:P2O5 OF FROM ABOUT 0.9:1 TO ABOUT 2:1; FROM ABOUT 10 PERCENT TO ABOUT 20 PERCENT OF A WATER SOLUBLE SALT OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, ZINC, STRONTIUM, CADMIUM, AND BARIUM, AND FROM ABOUT 2 PERCENT TO ABOUT 10 PERCENT OF A CHLORINATED MELAMINE DISINFECTING AGENT.
Claim 2
Independent Claim
108 words
THE METHOD OF CLEANING, DISINFECTING, AND PREVENTING CORROSION IN A BED OF CATION EXCHANGE MATERIALS AND WATER SOFTENING MATERIALS APPURTENANT THERETO WHICH COMPRISES TREATING SAID MATERIALS WITH AN AQUEOUS SOLUTION OF A MIXTURE CONTAINING BY WEIGHT FROM ABOUT 70 PERCENT TO ABOUT 85 PERCENT OF A MOLECULARLY DEHYDRATED SODIUM PHOSPHATE HAVING A MOLAR RATIO OF NA2O:P2O5 OF FROM ABOUT 0.9:1 TO ABOUT 2:1; FROM ABOUT 10 PERCENT TO ABOUT 20 PERCENT OF A WATER SOLUBLE SALT OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, ZINC, STRONTIUM, CADMIUM, AND BARIUM, AND FROM ABOUT 2 PERCENT TO ABOUT 10 PERCENT OF A CHLORINATED MELAMINE DISINFECTING AGENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |