Patent US3085975A successfully refreshed from Google Patents.
US3085975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating water
Assignee: Aqua Serv Engineers Inc
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Filing: 1959-04-30
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Granted: 1963-04-16
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Expires: 1979-04-30
Abstract
No abstract record available.
Inventors
- 👤 Charles E Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:11
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/12; C02F5/125
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A PROCESS FOR REDUCING THE AMOUNT OF SCALE DEPOSITION IN AN EVAPORATIVE COOLING SYSTEM WHICH COMPRISES ADDING TO THE WATER IN SAID SYSTEM A SODIUM POLYA SODIUM LIGNIN SULFONATE IN AN AMOUNT OF FROM 1 TO 30 PARTS PER MILLION, AND ALSO ADDING TO SAID WATER AN PARTS PER MILLION, AND ALSO ADDING TO SAID WATER AN AMOUNT OF SULFAMIC ACID SUFFICIENT TO REDUCE THE ALKALINITY OF THE WATER BEING FED TO SAID SYSTEM TO A VALVE BETWEEN 20 AND 80 PARTS PER MILLION, CALCULATED AS CALCIUM CARBONATE.
References Cited (Backward Citations)
GB191449A
Cited
GB200370A
Cited
US2264103A
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US2148006A
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US2505457A
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US2711391A
Cited
US2777818A
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |