Patent US3409547A successfully refreshed from Google Patents.
US3409547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water clarification process
Assignee: ChampionX LLC
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Filing: 1965-11-16
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Granted: 1968-11-05
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Expires: 1985-11-16
Abstract
No abstract record available.
Inventors
- 👤 Mahmoud T Dajani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:55
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR CLARIFYING WATER WHICH HAS SOLID MATERIALS SUSPENDED THEREIN AND WHICH HAS AT LEAST 0.1 P.P.M. OF RESIDUAL CHLORINE COMPRISING THE STEPS OF ADDING A MINOR AMOUNT OF A POLYMER WHICH CONTAINS A PLURALITY OF BASIC NITROGEN SITES IN FORM OF QUATERNARY GROUPS TO SAID WATER TO COAGULATE SAID SUSPENDED SOLIDS, AND THEREAFTER SEPARATING SAID SOLIDS FROM SAID WATER.
Claim 2
Dependent Claim
61 words
A PROCESS FOR CLARIFYING WATER WHICH HAS SOLID MATERIALS SUSPENDED THEREIN AND WHICH HAS AT LEAST 0.1 P.P.M. OF RESIDUAL CHLORINE COMPRISING THE STEPS OF ADDING A MINOR AMOUNT OF A POLYMER WHICH CONTAINS A PLURALITY OF BASIC NITROGEN SITES IN FORM OF QUATERNARY GROUPS TO SAID WATER TO COAGULATE SAID SUSPENDED SOLIDS, AND THEREAFTER SEPARATING SAID SOLIDS FROM SAID WATER.
References Cited (Backward Citations)
US3055827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |