US3347797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for treating fresh cooling water
Assignee: WR Grace and Co
•
Filing: 1966-08-03
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Granted: 1967-10-17
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Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Victor E Kuegemann
- 👤 Wayne L Denman
- 👤 Charles B Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/12; C02F5/125; C02F5/105; Y; Y10; Y10S; Y10S507/00; Y10S507/927
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A COMPOSITION FOR TREATING FRESH WATER FLOWING IN AN OPEN RECIRULATING COOLING WATER SYSTEM CONSISTING ESSENTIALLY OF A MIXTURE OF A SODIUM ZINC POLYPHOSPHATE AND AT LEAST ONE WATER-SOLUBLE SURFACE ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF (A) ALIPHATIC ESTERS OF A POLYETHYLENE GLYCOL, (B) CONDENSATE OF AT LEAST 5 MOLES OF ETHYLENE OXIDE WITH THE AMIDE NITROGEN OF AN ALIPHATIC AMIDE, AND (C) CONDENSATE OF AT LEAST 5 MOLES OF ETHYLENE OXIDE WITH AN ALIPHATIC ALCOHOL, THE ALIPHATIC GROUPS IN EACH AGENT BEING A FATTY ALKYL GROUP HAVING FROM 10 TO 24 CARBONS, AND THE AMOUNT OF SURFACE ACTIVE AGENT CONSTITUTING FROM 1 TO 10 WT. PERCENT OF THE MIXTURE.
References Cited (Backward Citations)
US2711391A
Cited
US2913420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |